iceman06

I spoke with Astralox65, and our problem seems to be similar. Obviously, a track under the same conditions, on the same card, would be the best way to confirm this. I'm not running my DCS as administrator; I've done so in the past, and it crashed immediately upon startup, as far as I remember. Indeed, you're referring to the BIOS update, which caused high voltages with my XMP profile, causing the VCCI and SA to rise to around 1.47 volts, one of the reasons for my rollback. I admit that updates can be a major improvement in some cases but when it comes to the bios some bad experiences lead me to think that if it ain't broke don't fix it, sometimes it can do more harm than good so I remain hesitant when it comes to taking the risk. My PC is performing quite well with fairly respectable performance despite its age, my games work well, the Viper is the only one that really causes me a problem. However, I will still try to see if the 1003 update and the activation of Resizebar offer a solution to my problem. If my tensions increase, I will take the time this time to define them manually without excess.

Hello @Astralox65 ! Welcome to the forum, I'm not happy about your problem but being able to read (finally) about someone who suffers from the same problem as me makes me feel less alone ! Solving a problem that few people are able to reproduce on their machine is extremely difficult as you can see, it would be interesting to know the complete configuration of your PC, perhaps we can find some similarities here, logs files, dxdiag and also software, a driver in common that could perhaps be problematic for us. Another hypothesis is that few people were probably able to establish the link with the radar altimeter or even notice the stutters (most people I know are not bothered by stutters, their eyes does not even notice them). Aside from that, the question of why ED isn't able to reproduce the problem is that all machines are different and more or less sensitive to certain things. In any case, I'm glad you came here to say that you've noticed the same thing, and I invite those who can to also contribute their piece of the building, as it will be of great help ! Don't hesitate to contact me even by PM if you wish, I will answer you as soon as possible!

You're right, I'm going to update it. Unfortunately, it's been a few updates that I'm thinking "maybe" my problem will be solved... but nope! I just hope it doesn't add another problem!

I have no trouble believing that you are not suffering from the same problem as me since in fact until now no one has been able to reproduce these stutters. To state with certainty that this has no connection with radar alt when you cannot reproduce the problem is quickly said... the real question would rather be to know why I no longer have the stutter when I switch to OFF or STBY?

@Special K Thank you for posting your help here, I will answer you step by step. - -First point ; Msi AB, I only use it when I want to analyze certain data, I haven't uninstalled it but it is programmed to activate only when I ask it rather than at session startup by default. Can uninstalling it make a difference when it is not active in my tasks? -Second point; the pagefiles. Indeed, having tested a few manipulations recently, this one was by default when the last Dcs.log was sent, you will be able to see that I have now set it to 32GB, unfortunately I don't see any difference. -Third point; Regarding the BIOS update. After trying a few updates a few years ago, I decided to go back to the original 0707 version since the later versions exerted abnormally high voltages and caused temperatures that I found unnecessarily high without any benefit. The only problem is that this version restricts me since it doesn't allow me to use ReziseBar, which is why I wanted to try version 1003, which is also old but one of the most stable according to Asus users. Do you think the Rezisebar is an advantage in DCS? No one has really been able to tell me if the game supports it. -Fourth point: The armory crates and DtsApo programs. Armourycrate is a real pain in the neck. Unfortunately is useful for my Rog Spatha mouse profile and all my LED lighting, which is the only reason it's there, DTS has been disabled. I've determined the circumstances of these application crashes, and they only occur when closing sessions when I turn off my computer. No problem,so I even disabled them at startup for a test, and it makes no difference to my Viper problem in DCS. -Concerning Windows 11, a touchy subject but on which I know that I will have no choice but to end up giving in, I also know that the clean and complete reinstallation of my PC will take time, which is why I want to do this calmly when time allows me. -Final points; Hotplug is already disabled, SSAO or any other settings make no difference to my problem, I've tried everything possible on that side I think. Fxo / Metashaders 2 cleaned several times with nvidia shaderds cache and direct x as well DCS repair/uninstallation/reinstallation performed with no effect either. I don't have this file in saved game Scrips\Export.lua This problem is quite frustrating and occurs when my alt radar is activated only unfortunately I do not understand how this is possible but it is nevertheless linked to my problem on my PC.. unfortunately you have to see it to believe it, What is even more frustrating is to see that no one can reproduce this on their configuration, making my problem even less solvable. - I'm attaching another DCS.log as well as a DXdiag again.. ignore the DTS crashes they are not problems at all. dcs.log DxDiag.txt

@BIGNEWY We've probably stumbled upon an inexplicable paranormal phenomenon! I haven't updated the bios yet, the idea would be to do it first and foremost to try to activate the ResizeBAr in case of doubt or it would make a difference for me but I don't believe it.. My intuition would lead me to think that the reactivity of detection and sending information from the viper's radar altimeter creates an overload somewhere on my configuration, like a sort of bottleneck a bit like a pooling rate of a mouse too high could create spikes but I don't know,This is a guess but I have no idea how the game code works, maybe a developer could tell me if my theory is likely or not..

@BJ55 No, I use MSI AB or fps counter only for testing, I know that any performance analyzer can indeed overload the core and produce spikes but this is not my case. I can reproduce these spikes only in the Viper with the radar altimeter enabled, as soon as I put it in stdby or off it does not happen anymore. This seems to create an overload on my system to render the images and triggers several successive frame time spikes without any drop in fps. When I perform a barrel roll, for example, the fact that the radar altimeter detects a surface and sends the information, then no longer detects the ground, then resumes it again seems to cause this problem. Another thing I could say is that when I first press the AG button in a game, it creates a very brief freeze, and then I no longer have it when I press it again, This seems to be one of the incomprehensible or unexplainable problems that can occur in many PC games I think.

Hi @nodes Your configuration is indeed very limiting for DCS, I'm also experiencing some annoyances with the F-16 in particular while the rest of my modules run perfectly smoothly. If you haven't already, I recommend you start by reducing all your graphics options without exception for a test.(All to minimum and also disable DLSS) -V-sync and Fps Cap Disabled -Run your power management in performance mode -Set antivirus or Defender exceptions for DCS and also for saved game folders -Set DCS.exe app to Performance in gaphique setting on windows -Try to ON/OFF game mode and disable Game bar -HAGS OFF Nvidia settings -Power management performance mode -Low latency mode : Ultra -Set unlimited shader cache in default 3d settings (Clean also all your shader caches) Firstly, this setting will allow us to have a starting point to test the fps that your configuration can obtain and perhaps eliminate some problems. After that, do a test flight, possibly record your track or give us your average fps. One last thing and perhaps one of the most important with the F-16 because it is my problem too is that I have to switch the Radar altimeter to OFF otherwise I suffer from big stutter during my maneuvers for a reason that I ignore so try it when your parameters are at a minimum. (See picture)

Hello @BIGNEWY ! I'm taking the opportunity of the latest update to drop a new log file and a track, since the team seems to have fixed some issues with track playback. Indeed, when I was viewing my tracks, it didn't play out exactly the same as during gameplay but Now I can see the stutters exactly as they were. At first glance, I can think that the sim is smoother with the fixes made to CPU overload, even if it didn't solve my stutter problem with Radar Alt. Hoping that this can perhaps contribute another stone to the building ! dcs.log ViperTrackAltrdrON.trk

@BIGNEWY Hello, I'm back here to give a little feedback following other tests that I was able to do and which unfortunately didn't change anything. -Started by uninstalling DCS and GTA V then also freed up space (almost 500GB) Clean reinstallation of DCS with only the initial maps and the Persian Gulf. -Lowered the resolution and all the graphics settings to the point where DCS looked more like the original Combat Flight Simulator than DCS, I could even exceed my monitor's refresh rate of 240hz without any problem! With all this, I was still able to reproduce the big Stutters induced by barrel rolls with the radar altimeter activated, I am formal and those who will say that this is a coincidence are wrong, unfortunately I seem to be the only one to suffer from this on my viper..? What seems strange is that the Mariana Islands map seems to be less affected or at least not in the same way while it is harder for my fps I haven't updated the bios yet so I can still try to activate ResizeBar in case of doubt but with little hope.(I had issues few year ago when upgrading to a most recent version so I still want to make sure that this won't be the case before try again) The thing that would come to mind is perhaps that my configuration does not support the information upload speed introduced by the radar altimeter which fluctuates much more compared to the barometric altimeterbut as I repeat it is not a coincidence or random because I can reproduce it and stop it by activating or deactivating this function.

@BIGNEWY Will keep you informed when this is done. Do you know if Resize Bar is supported by DCS just by enabling it in bios?

When I play the track the stutters do not appear as they actually were during in-game execution, the track is therefore not very representative for analyzing my problem. With amazement,I even wanted to replay a track of a fight and saw that an AI enemy dodged my missile and shot me down even though in the game it was me who had shot it down...quite surprising, huh? I am aware that my PC is getting old and that this is an important factor on this simulator but it runs with a decent fps (80-150 fps 1440p with Dlss) plus,I had no problem with the Hornet and the other modules that I own give me perfectly smooth gameplay.. The F-16 seems to pose more of a problem to me for some reason and I can easily say that deactivating the radar alt prevents its jerks from occurring during a roll, I can't explain it, I've been testing this for weeks and reproduce this every time. The point where you are right is that it is triggered more easily in certain areas such as near Sharjah airport on the golf map. I can reproduce it even in the middle of the desert but indeed this area is more sensitive.

@BIGNEWY Hello! after a test I come back to inform you that changing the graphics card and drivers did not change the problem. Another idea that comes to mind is to activate ResizeBaR however I have to upgrade my bios to a more recent version to have access to it. Has anyone been able to reproduce the problem with the viper and the same map?

Indeed, pagefile is on Disk C, it was configured at 32GB when my Dxdiag was sent, unfortunately the games weigh so much now I had not foreseen this eventuality 5 years ago. Only DCS, Rdr2 and GTA 5 are present on this disk, however I do not think that my capacity is guilty of these stutters because my other modules work fine.(I also had these problems before adding the Nevada maps which weighs a little over 30GB) One thing I noticed when watching the tracks is that it doesn't reproduce the stutters as they actually were during live gameplay. You really have to play to see their intensity on the performance analyzer. It remains to be seen for my part the Nvidia driver, I will also get the RTX3080 from my girlfriend's PC for a test

This is a good question because I didn't specify it in my message, I tried several settings whether G-Sync + Vsync On/OFF, Fps cap: Without / 240 / 145 / 120 / 100 / 60 / 30 I even tried several monitor frequency adjustments without success. Indeed, as you mention at high fps, some stuttering can occur, but in my case, even with a heading of 30fps or 60fps, these high spikes appear when the Alt radar is activated during climb, dive and roll maneuvers.

Have you tried to reproduce the exact same path and movement as in my track? To respond to your previous post, my D disk is completely empty, I only store old secondary games on it. I also disabled XMP to test if the problem was there but no change the stutters occur with the radar altimeter and disappear when the switch is OFF. One avenue could then be the Nvidia 566.03 driver. I admit that I have not tested any other driver since..

@BIGNEWY Hi and Thank you for your answer ! I attached my dxdiag with the other files in my initial post, I also set my paging file manually to 32768MB. (Page file was set in auto because Red Dead Redemption 2 crashes when set manually, Game mode and hardware scheduling was also tested ON/OFF, Full screen is set and no changes) Concerning Windows 11, I am still hesitant to come to it but I know that I will soon no longer have this choice if DCS locks updates for W10 in the future... The Viper is my only module causing this problem. After some additional research, I found two posts similar to my problem that date back to dcs 2.5 and were fixed with an update. Later a member reported the problem having returned to 2.7 but without having more details Post 1 : Post 2 :

Hello dear pilot friends, I'm posting here because I think I've discovered a rather disturbing problem on the viper, I haven't found any other post mentioning this but this may be explained by the fact that if other people have a similar problem, they haven't been able to establish the origin. As the title indicates, these stutters occur when the altimeter radar is active, this is easily reproducible when I perform a dive or roll climb below 5000 feets. (See Track files) I was flying Hornet and recently switched to Viper, so I can't know if this problem appeared with an update or something in my computer configuration or if this is reproducible to other people. What I can say with almost complete certainty after having looked into the problem for several weeks and having tested almost every possibility of adjustment, is that the problem only occurs on the Viper among the other planes that I own (Hornet, Mirage 2000, F-15 FC3..etc) I first started by completely reducing my graphics options, tested different nvidia settings, tried different power plans, with and without HAGS, disable full screen optimization, disable core parking, add exclusions to windows defender, set high performance options in windows display settings, repair DCS, Clear all shaders caches, game and direct X, Disable hot plug, disable usb selective suspension but nothing was able to remove these stutters. After trying all these solutions I looked into the various electronic systems of the Viper and that's where I was able to understand that deactivating this simple switch solved the problem. With my current settings I was able to eliminate 98% of stutters for which I was able to determine an origin, 1% still remaining unexplained to me but only very rarely occur randomly and do not constitute a serious problem, remaining 1% that I can with certainty attribute to the ALT Radar of the F-16C. I can reproduce the problem on each map that I have, whether in a quick mission or via the mission editor, but my most convincing tests are taken from "Free Flight" on the Gulf map, you will be able to see by looking at the track that I release my load to go to cat 1 and give more agility to our bird.(Sorry if there were pedestrians down there) It would be interesting to know if other people are able to reproduce these jerks under the same conditions as me to determine if this problem deserves a correction from the devs or if unfortunately only my configuration is responsible. I'm certainly forgetting things to add so don't hesitate to let me know. Otherwise please excuse my English google translate but unfortunately this is my only way of communicating with you Despite its 5 years, my PC configuration with my settings still holds up quite well on DCS Configuration : Windows 10 22H2, Intel I7 10700K, Asus Z490-E, DDR4 32Gb (2x16Gb) G.skill Trident Z 3600Mhz, Rog Strix 3060Ti, Nvme SSD Samsung 970 Evo plus 1Tb, SSD Samsung 860 Pro 1tb, SSD Samsung 850 PRo 256gb, Asus PG279QM 240hz G-Sync, Hotas TM Warthog + Viper TQS Throttle. Nvidia Drivers and Panel settings : -566.03 (Old driver but which works very well for me (I am one of those who do not update if it is not broken especially since Nvidia missed the latest drivers) -Low latency mode: ultra -Power management mode : Prefer maximum performances -G-SYNC : ON -V-SYNC : Use 3d setting and OFF in game (Better for me on DCS) -Shaders cache size : 10GB (unlimited tested too without any changes) Windows Settings : -High power plan -Game Mode : ON ( tested OFF also ) -Game bar : OFF -Hags : OFF -Full Screen optimizations : Unchecked Among the attached elements you will find the comparison between Radar Alt On and OFF, I have also attached the use of my processors on msi afterburner because I suspected that radar alt led to a more intensive use of the cores when activated but by comparing this does not ultimately seem the case, the two seem similar... (?) Thank you for reading, I look forward to your feedback ! ViperStuttersRDRaltON.trk ViperStuttersRDRaltOFF.trk dcsRDR_ALT_ON.log dcsRDR_ALT_OFF.log DxDiag.txt