Framerate/Graphic Performance Issue v1.5

Tested some more yesterday, and yes the Mig does run a little bit slower when compared to some of the other modules. However didn't it ALWAYS run slower than the other modules? Since it is basically one of the most complicated modules in terms of 3d modeling, advanced systems modeling and flight modeling?

Yes, I agree it did run a bit slower than other modules (for me some 20%, but now it's 100% slower). I get round 60 fps in all other modules and 30 i MiG-21.

I am glad that Cobra is aware of this and that LN guys will do what they can to fix this. Thanks!

What's the instant mission with a couple of Mi-24 Hinds flying by on your left right at the start? Is it the "take-off" one? As soon as they show up, the frames on my GTX780 and i5 4670K OC'ed to 4.2 drop from V-synced 60 to 40-few.

Now, I know and understand that other planes flying nearby were always a framerate-trouble in DCS 1.2.xx, but seeing the same happening now with the -21 in 1.5 is worrying a bit, especially when other modules seem to be running much smoother than before.

I think I'll edit this particular mission by putting the the -15 or Sabre in it to compare FPS. Might do the same in 1.2.16.

Trying to reproduce.

 

Locally I get identical FPS to the TF-51 over the ocean in both Cockpit and External views.

Will try to investigate.

If you want to reproduce load up the cold start mission out of Nalchik.

Look over your left shoulder out of the cockpit and watch the framerate dip down. Then press f2 for external view and look in the exact same direction and watch the framerate pick back up.

(Also you'll see that the AI is broken on this mission in 1.5 and stops in place on the taxiway, but that's a side note).

The mig21 framerate drop is most noticeable on the ground and looking out from inside the cockpit. Compare to other planes looking around at a busy airport on the ground in 1.5 where the performance is very smooth.

You will likely not be able to reproduce this in the air. It's much less noticeable in the air.

Results are the same.

 

We will investigate further.

No need to investigate more Nicholas, I found the "issue". I was trying all the planes and checking the fps in the same point, and you have reason, the P-51 gets the same fps than the Mig.. So I thought.. why is that plane getting that weird framerate if it comes from ED and their other modules run great ? And checking the screenshots I found the mirror.. So I uncheck the mirrors option in the menu and run the same mission with the Mig.. and I get a 40 % more framerate this time..

Seems that some modules like the Mig, the Mi-8 and the P-51 uses high resolution mirrors.. or the same we have configured for the screen.. and because that we get such big impact in framerate..

is there any way to config the mirror resolution ? Would be great to find one that works well with my system..

PS : Even without the mirrors, the Mig gets a 20 % less fps than the major part of the modules, but I can accept that considering the realistic look you have achieved with that cockpit. It only lacks a pilot body, hope you add it in the future..

Same stutter problem here.

it will wait in hangar till next updates.

I have fps well above 70, G-Sync. But i have microstutters with the mig21, especially while taxiing. No other plane shows that kind of stutter. Flying high it´s no problem at all.

I love to fly the -21. But that stutter is bad for the immersion.

Mirrors are deactivated.

Hardware

i7-6700k, 2*gtx 970 sli, 16GB RAM, W10x64

Fox

mig-21 performs smooth with update 2:)

thanks

mig-21 performs smooth with update 2:)

 

thanks

Can anyone else confirm FPS improvement?

Can anyone else confirm FPS improvement?

Yes, very smooth now. She's a joy to fly again.

The wheel brake sound is also back, and the throttle control binding works too. Used to show up red on the list.

Thanks for all your work Cobra. :)

Did some comparisons substituting the 21 for the T-51 and the SU-27 in a mission file and it actually performed with one or two fps more than those planes in the same spot sitting on the tarmac. Though there was still slowdown as it seems to be a really demanding spot.

So I guess at this point it performs up to and above the level of the other planes for me.

Now just waiting excitedly for the controls to all be returned and I can start flying my 21 in 1.5.

Can anyone else confirm FPS improvement?

confirmed!:thumbup:

thank you all!

Hopefully I can help squeeze a little more FPS with new LODs on the way. :thumbup:

Can anyone else confirm FPS improvement?

When I start the quick mission "cold start" in 1.5 and look left towards the other migs on the ramp I get FPS drop down to 22 for a couple of seconds and then it keeps at 32-37 (still looking at the migs). Looking elsewhere gives stable 50-60 FPS (the farther from the ground - the better). Seems to have become slightly better than it was in 1.2

My specs are: CPU AMD FX-8350, RAM-8G, Geforce GTX-780

Unfortunately, I can confirm status quo in "cold start" mission, and performance DEcrease in "take-off" mission.

Experiment - loading "Take-off" mission in a) 1.2.16; b)1.5; c) 1.5 with MiG-21 replaced by MiG-15; checking fps using in-game counter when the Hinds are flying by on the left. Gfx settings maxed out. Results:

a) 41-43 fps in 1.2.16;

b) 29-32 fps in 1.5;

c) 38-40 fps in 1.5 with MiG-15;

Drop in performance compared to 1.2.16 is surprising and disappointing to say the least, but result obtained with the -15 suggests it's more of a general issue with my current Windows and in-game gfx settings. Will have to spend some time tuning these.

My specs: i5 4670K @ 4.2 GHz, 8 gigs of RAM, single GTX780, playing at 1920x1200 and aiming at solid 60 whenever possible.

I have fps well above 70, G-Sync. But i have microstutters with the mig21, especially while taxiing. No other plane shows that kind of stutter. Flying high it´s no problem at all.

I love to fly the -21. But that stutter is bad for the immersion.

Mirrors are deactivated.

 

Hardware

i7-6700k, 2*gtx 970 sli, 16GB RAM, W10x64

 

Fox

I am looking for the cause of the stutters or bad framerate, and for now I think that the problem isn't for the Mig-21. Make a mission in the editor with only your plane in the airbase, startup and taxi and probably you are going to get the same fps than while fliying.. Later add another IA plane and take a look at what happen..

In my case, in Nalchik, every time another plane start up my fps fall from 60 to 45, and that framerate stays until that plane take off.. If I add more planes I get even lower fps.. The curious thing is that in the moment they take off the framerate loss disappear..

I have tried with the Mig 21 and another planes and it happen with all.. so seems that is not related with the Mig..

Edit : The same with Helicopters.. a pair of Mi-8 hovering at 5 meters AGL in near my plane 60 fps.. if they're taxiing or with engines running while in the ground.. 30-35-40 fps..

An update to my post above. I decided to start turning in-game options on and off to see which one causes the biggest performance hit with MiG-21 (or just 1.5 in general), using the same "Take-off" instant mission as the benchmark. Didn't have to look far - civil traffic is a killer, even though I can't see any of it out of my MiG's cockpit.

With it's turned off completely, the fps stays in 50-52 range (previously 29-32 with traffic on "high"). Even the "cold start" mission runs better - looking to the left at the other MiG on the ramp and the frames drop to 50-few for a few seconds, then climb up to 58-60 again (previously, with traffic on, it was dropping to 40-few).

That explains why I observed performance decrease after the hotfix - previously the civil traffic was just not working at all, even when it was set to "on" :D. On the other hand, for a bunch of scripted cars, trucks and trains You cannot even see, they cause a massive fps drop, don't they?

Nice find, after tryout I can say the same.

The difference between NO trafic and HIGH is about 13FPS on my setup in a MiG-21 take off mission.

Thats pretty considerable given they are just bunch of useless trucks.

When I start the quick mission "cold start" in 1.5 and look left towards the other migs on the ramp I get FPS drop down to 22 for a couple of seconds and then it keeps at 32-37 (still looking at the migs). Looking elsewhere gives stable 50-60 FPS (the farther from the ground - the better). Seems to have become slightly better than it was in 1.2

My specs are: CPU AMD FX-8350, RAM-8G, Geforce GTX-780

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I think that's just the cold start mission on further experimentation.

I tried using the mission editor to replace the mig21 with the SU-27 and the T-51. The mig21 actually got one or two FPS more than those aircraft in the exact same mission.

An update to my post above. I decided to start turning in-game options on and off to see which one causes the biggest performance hit with MiG-21 (or just 1.5 in general), using the same "Take-off" instant mission as the benchmark. Didn't have to look far - civil traffic is a killer, even though I can't see any of it out of my MiG's cockpit.

 

With it's turned off completely, the fps stays in 50-52 range (previously 29-32 with traffic on "high"). Even the "cold start" mission runs better - looking to the left at the other MiG on the ramp and the frames drop to 50-few for a few seconds, then climb up to 58-60 again (previously, with traffic on, it was dropping to 40-few).

 

That explains why I observed performance decrease after the hotfix - previously the civil traffic was just not working at all, even when it was set to "on" :D. On the other hand, for a bunch of scripted cars, trucks and trains You cannot even see, they cause a massive fps drop, don't they?

I have tried with traffic Off and I get 15 fps more, but the problem is not only related to traffic, try to add two units doing a ramp start near you.. at the moment they start their engines, you get a similar fps loss.. and the same with mirrors, with they enabled, I get another similar fps loss ( even when not looking at it )..

All these things are lowing the performance, which is natural for one side, the real problem is that dcs is not making use of our system hardware, if you monitor your cpu cores load, and your gpu load you can see that even with low fps.. none of the cores is working hard, and the same for gpu..

after update 3 ,is anyone noticed the stutters back again?

after update 3 ,is anyone noticed the stutters back again?

especially with mig-21, yes same here.

hotfix 2 was a medicine but with hotfix 3, my stutters came back like the first 1.5 release.

Same here. Worst perfomance on the Bis.

Same here. Worst perfomance on the Bis.

My best plane with bad frame.

My best plane with bad frame.