Nedum

I don't think that the shadows are the problem, because even you disable the shadows the problem is still there, but not a so hard FPS hit anymore, but it's still there! Take the quick free flight mission with the D9. Turn 180° and fly to the lake near the shore. At the sea side there is a big city with many trees inside and on the other side of this lake is the big forrest. I have around 85+ FPS at the city but as soon as I heading to the forrest, the FPS went down. It's like many "meshes" are only CPU generated (soft) and not by the GPU (hard). This could explain why the VRAM is most of the time less than 50% filled. A single row of 20 trees without shadows kills 60% of my FPS (free flight quick mission with the BF109). That has nothing to do with the shadows. I believe that the "kill shadows mod" will really help but not fix the problem. For me the mod didn't change a bit. The FPS lost behavior is still there. I would like to have a mod whic´h would change the trees in such a way that they will become a 3D object. So we could see the difference of VRAM usage and FPS drop. Becuase if they are all 3D objects the GPU should use them and should fill the VRAM. Now it's looks like the drops coming from the CPU tree math and later the CPU must "translate" them to the engine also by software to mix them up with the 3D rednerer. And this slows down my system. The shadows are no problem for my rig the difference between off and Ultra is like it should be, nothing special. The trees alone are the problem for me.

I would only really like to see a track in which the BF109 can do such nice maneuvers as I can do with the P51 or the FW190. That's all. Ok the part with the tracks is really bad atm but a nice vid could do it also. I myself doubt that there is one of you who can fly good loops and Cuban 8' like he can do with the FW190 or the P51. Yesterday I've got another problem during a test flight for the "tree FPS dropdown behavior". Was the quick mission free flight map for the K-4. I was in the special menu in which I can set the elevators and the ailerons basic trim. Why is the plane rolling if I only set the basic trim for the elevators? Is there a translation problem for the German language, because if I change the elevator (Höhenruder) trim the plane rolls left or right. Another thing is, for no reason, at which speed I am flying, if I push the stick to a “special” negative AOA the plane trims itself out. As soon as I have reached this special AoA I can put my hands on my knees and the k-4 is flying in a straight line till it hits the ground. Is there a special explanation for this behavior? And if I dive with high speed (700 kph) the plane suddenly change the direction in which it will be forced to roll. Most of the time hard tendencies to roll left and then it change to roll right… but why? Even for this behavior I can't find an explanation. The torque direction is changing but why? The more speed I have the more air drag is “stabilizing” the plane, because of the stronger lift you need much more force to change the flight direction but it seems so if I gain more speed and more lift the plane stability becomes more weak and it will roll even harder and this although the RPM are the same and only the overall speed of the BF109 is changing. The engine power wasn’t raised or pulled down.. the same 1.2 ATA. Is this really how a real single prop plane would act? I've only flown some gliders and single porp planes only as a RC pilot, but even with my overpowered single prop planes I can't see such a behavior. I'll bet that my RC porp planes will have a minimum of 2 times more ps per weight as the real ones. If I put the throttle in one second from zero to 100%, and my RC plane would behave like the BF109, it should do a 360° roll but it still flies straight with only a little shake/wip of the wings but after that the plane flies straight without a tendency to roll as soon as I change the prop power. The forces acting on the plane are enough to stabilize it over the whole flight. I only trim the planes during the test flight to counter the roll behavior. After that I only need to watch a little to counter any roll, if at all, and for me the more interesting part is the elevator. Pitch is a thing I must watch the whole flight time but roll.... no and for sure not a single roll direction change because of high speed changes. Ok this are only small RC planes (1,6+ meters wing span) but the forces, which are acting, are the same as for the big ones. And this is a behavior I can nearly see with the P51 and the FW190 (will buy a RC FW190 during XMT :)) but the DCS BF109 seems to be a plane of another universe. A "special" dive AoA gives her a zero trim position even the speed is raising and at a special speed the torque change the direction, even the RPM are the same. If there are explanation for such a behavior I would really like to read about it. Please look at this: and this: This planes have all a way more power (weight thrust) as one of these WWII birds and there is no such rolling/torque effect like we have in this game

I've mentioned that for this "tree problem of low FPS" there must not be many trees. In the BF109 k-4 free flying map even a simple row of 20 trees are enough to slow my rig completely down. From high 100 FPS down too low 20 FPS. The micro stutter seems to be another problem. Tried 4 different AMD driver 15.7 up 15.10 and the problem is still there. I cannot say if this has something to do with the drivers or with the trees but if nV and AMD have the same problem, then I would think it's something with the trees. A single line of 20 trees and the FPS will be eaten like there is no tomorrow anymore... seems to be a little too much for me. ;)

I don't really know if this is the reason, but I've heard this has something to do that DCS isn't starting right now in full screen anymore. To switch to full screen use "left ALT+return". Perhaps this fix your problem.

I have done several tests! OC and non OC -> no change 3 different drivers -> slightly different FPS but the same behavior as before The interesting part is, that 1.2.6 has the same behavior but not so extrem. With 1.5 I have some more FPS as with 1.2.6 at the start of the quick intercept D-9 mission (1.5 = 125 FPS max versus 1.2.6 97 FPS max). If I turn 180° to the Forrest, the behaviors of both engines are the same. The more I close the range to the Forrest, the more I can notice a FPS drop. If I set both engines at the same game settings, the VRAM use is the same. All max. like in 1.2.6 the VRAM use is for both engines ~1650 MiB. If I disable the shadows in 1.5 the loss of FPS is per percent the same as with 1.2.6 with disabled shadows. So I think the shadow thing is only a point over the real reason... the trees themselves! Two different engines with the same behavior (more or less), that seems to be a program (Direct3D?) problem. I would really like to see which VRAM use the nVidia GC have. Max. 2100 VRAM use is extreme low for a DX11 engine. And because the behavior is per percent the same with both engines, it seems so that not all is DX11 and there could be a DX9 fallback which is the reason for this behavior. Looks more like an old behavior in a new dress! ;)

It's simple as hell... if the vehicle does strange things which are for no reason plausible take the one that you can control if you must only use your instinct. K-4 isn't a vehicle you can drive alone with your muscle memory. This bitch does things you will never expect. All seems to be "not enough" or "too much"! There is nothing inbetween this both stats! There is not enough trim control and to much self turn behavior. There is not enough fine control with the stick or rudder but too much acting on rpm changes and so too much rolling and wing shacking. You must me pay a lot so I would only think about to "ride" this bitch! :music_whistling: So I will always take the D-9. She feels right even it's a hard time and if it comes to a fight you need a "friend" you know what she is doing. And even she is brave, she can be a beast if you give her all of what you have! To "ride" her is pure fun! This is the right one.. you know what I mean? ;)

The nav lights are a victim of the new LOD system... that new behavior is not only visible with the OR.

During the D-9 intercept quick mission max 2178 MiB VRAM in use. The more I close to the forrest the more the FPS went down. From 97 -> 23. I don't know what it is, but as long as the shadows are on it doens't matter if they are low or Ultra. The FPS are always the same also the FPS lost. No change if I change the vision range too. The VRAM use is really low, like there are to many things not loaded to the VRAM and the CPU is doing the whole work. I will test some things later (other drivers) and give you a report.

4 GiB VRAM

Nice Vid but where was the nice looking loop? A really good looking loop locks like a circle and the start and end point are all on the same axes. Ok you are "only" (very good at all) working with the speed, rudder and trim but you can clearly see that strange behavior of this bird at "slow" speeds. What is the reason for this shaking over the whole size of the plane? Left and right over the flight axes and up and down over the wings? Why? And this with this front flaps… really? This bird burns energy as if this is a stone wall in the air.. but it can do “loops” by itself. without the overpower engine this bird would be only a victim in a dogfight! No other prop plane in DCS has this ugly flight behavior. This bird feels not natural in any way... on ground or in the air it's the whole time a fight with this plane and not with the enemy! Or short; with this plane the Germans needed no enemies to get a hard fight! ;)

There is a Bug in the SU25T Campaing in which you can't see the Shilkas. And I have mentioned that there seems to be a problem with the LOD , which is in some cases a little bit of strange! The Model loses in special angles the size and you also can't see the position lights anymore but if you only change your view angle and not the distance the model becomes suddnely really big (normal). So perhaps this has something to do with the new LOD system?

And If you look at the shadows, we can see they are different? I have noticed this several times now. With 1.5 it seems so that we have differnt shadows for the same thing. As you can see in the picture, the upper one shadow has much more edges as the lower one. Old and new stuff mixed up together?

If you report a problem you must always report your system specs too! Without this, your problem report is only awaste of time, because none can give you proper answer without your systems specs! Use your signature to have your specs with each post of you! ;)

This may have something to do with the in game time. As far as I have noticed if the shadows become longer the more we get FPS hits. If you play the D-9 intercept quick mission, you will notice a big FPS hit if you fly low (1000 meters) over the big forest near kabouichi. It gives me a hit of 75+FPS. Lowest FPS was 07 FPS.

You still didn't answer my question! None of you did it! Why? Is it so hard to make a short track flying the BF109 like in this Vid? For me I must say... yes.. but if I read all this answers I can't understand why till today not one of you answers my questions!? Reason? Again, we have a vid from a living German ace in which he is telling us that all this rolling and flip over the wings behaviors are not like that he have experience with. So now we have Americans, English and Russian "test pilots" and all telling us different stories. Not even one story fit with the one from the other one and the voice of the German ace and the logic will be totally ignored! Why is it not possible that we can trim this bird at a speed higher as 480kph? Any logic solution for this? I really want to hear it! All I read in many books is that an English pilot says that the BF109 was extreme stable and there was no point in which she was rolling suddenly, even he pushed the throttle hard. And he could trim her out at any speed. And American pilot told that she was very nervous with a hard tendency to roll. And the Russian test pilot told that he could not trim her out at higher speeds. The German pilots told us she was a very neutral flying AC, with no tendency to roll much after a hard push at the throttle “…. she was very forgiving and you could trim her at any speed….” So now do we trust the Ferrari test driver or the BMW test driver if we ask how a Ferrari should handle and feel? You all gave me sources from Pilots from different nations with total different experiences with the same enemy AC! If we would use pure math then we must cut out what is by one test pilot positive for the same thing and for the other one at the same time negative. Which alone should be a surprise and should let us think about how good these tests really were (propaganda?). 3 tests with 3 different results.. hmm!? And the end result would be that the K-4 was the worst fighter plane in WWII history! And this is exact how this plane feels to me right now! I have flown the BF109 in IL2 and Cliffs over Dover but this BF109 behavior we’ve in DCS is nothing near any BF109 I could fly in any other sim. All other prop planes we have in DCS feel more or less like in Cliffs over Dover or IL2 but the K-4 is an UFO. It doesn’t match in any way with any AC in any other sim. I have never flown such a bad/beasty AC in a sim before. If this is right how she here handles, she was for sure a big mistake in RL! But it’s only a game and if you like it you like it and this is good! So I am out here but would still see a track from one of you flying a good looking loop and a Cuban 8!

Sorry but even this vid (I know this one) do not show any of the behaviors we have in game. I would really like to see a track of one of you doing a loop and a cuban 8. Compared to all other prop planes we have in DCS the K-4 is the one with the most strange and complicated flight behavior even if I try to do a simple loop I have to fight her all the time like in a cage fight. So if most of you think this is all ok... please show me how to do it the right way.... :helpsmilie:

Did you read what we have written? We know this all very well and because of this we did a comparison with the old one! 1.5 has a new LOD system which makes it more hard to spot objects as with the old version. What is so hard to understand that? The engine does not show the objects at the same range at the same size as before anymore! It's not even the haze overall, it's like that the object size will be reduces with less steps much earlier and that even we/I use the "large" option. Please test it by yourself and please don't tell people how dumb they are or at last, don't write your postings in such a manner that it must look like that you think that we are all idiots!

With 1.5 I've noticed this haze over all. We got this with the old build as well but not so extrem like it is right now! Spotting of objects is right now a pain in the ass with this "feature". I would like to have the option to disable the haze. Last Sunday I was on a Helicopter flight and I can say you what? No haze! ;) I could spot cars at 5+ kilometers without any problem. And why we have this haze in the game? :(

Only as long as I can set it to off! If you notice something in a game like motion blur or DoF than it has for sure nothing to do with reality! I hate all this features as long I must use them. They have nothing to do with a real behavior!

The important part is "...It's not 109-specific...". So why is the 109 the only bird in DCS with this strange hard effects of the propeller momentum? It's the only bird that trys to change the roll behavior if you change the RPM only a few degrees. And the K-4 does the exact opposite of what the german LW ace said in the vid. The K-4 was a very stable flying plane. No shacking or sudden flips over the wings. In DCS the K-4 becomes very nervous and you can no go against the momentum of the prop even with full rudder. He said very clear in the vid he has never such a shacking over the wings at low speed. So we have a vid of a real pilot but what he said is not we have right now. Is all what he said only relevant as long it fits to the current flight behavior or why we don't use what he is saying? As I have said in another thread. Please, can somone show me a track where one of you fly a good loop and a cuban 8!? Till today the k-4 is the only plane I can't manage this as I can with all other planes. This bird flips and rolls without no reason much more as any other prop plane in this game, even at higher speeds. But it shouldn't or for what were the front flaps again? For a more unstable flight behavior at low and high speeds? :huh: For me the K-4 is not any near of what the LW ace told us!

You should look the video of the german LW ace! He said several times that he could use the brakes after landing full down with no nose over. He did this after a landing on a very small field infront of the house of the family of his wingmen. After the landing he must use full brakes to not over shoot. I can now flip the nose at a speed of only 50 kph. I hardly doupt that this brake behavior we have is any near the reality. Overal is the K-4 the AC with a very ugly behavior in all stances. Can some of you show me (track please) how I fly with this fighter a nice looking loop or, even better, a cuban 8!? If I use the D-9 or the P51D I can do this realy easy but with the K-4 this is a pain in the ass! This bird has such unbelievable flight behaviors, I don't get it! The old german ace said "... if she stalls this was a very gentle stall with no behavior to flip over a wing, not the slightest. She "sunk" more or less over the nose very gentle and you could get her back with no problem." Hm.. must be another plane I fly right now.... :cry:

I have the same Problem. The new 27 campaign isn't working anymore. The startpoint of the first mission has changed. The AI is driving in the opposite direction as it was before 1.5. It seems so that the AI has a new command in a new order and is switching the start point by 180° and after that the AI doesn't know what to do anymore.

For me the Su27 has too much lift after every little speed change. So I must often hold the "trim stick" a long period to get a fast reaction and with this the "search" for the right trim position is a never ending story. To fly the Su27 you must trim this bird all time long, as long as the speed is changing. Should be not so hard like it is right now! The problem I have with the trim is that if you have trimmed too much in one direction the bird gets very nervous and "light" around the center of the stick. The Su27 can do crazy things if you trim her very strong out of level flight. It's like the stick has its full working range but with trim you "squeeze" only the direction in which you have trimmed and so the stick becomes much more aggressive. It's like you stretch the arms of a crossbow. There is a special point at which you have as good as no counter force. You can move very easy the stretch stick at this point. But if you get over this point, in one direction you feel a big resistance and on the other side there is no counter force anymore and this is how I feel with Su27. It’s like the center of my stick will be shoved in one direction. A unbelievable feeling for me. At this "no counter force point" you can swing the nose of the Su27 without any reaction of the physics. It‘s crazy! As if there are no physics in this special area acting with the Su27. In this area the Su27 becomes “floppy”.

This is an old bug. The Su27 wheels burst to fast compared to all other wheels in this game. It seems so that this problem isn't fix with this patch. You can burst the wheels even at 30 kph without any problem, or if you brake for a longer time after the landing with a chute. Answers like "use the chute" or "you are to fast" doesn't really help.

So it's right if I say: 1.15 ATA is not cruise it's it's a step under cruise (Sparleistung or save gas mode). Cruise itself starts above 1.15 ATA up to max 1.35 ATA. So at least is 1.35 ATA cruise power (Dauerleistung). Is that right?