Very bad performance on VR since 2.9 Update, Video comparison with same settings

[venec]

Since 2.9 DCS has become unplayable for me. I made a side to side video to show better the difference in FPS with the same settings on both.

I reverted to 2.8.8 to make a couple of videos and then updated again to 2.9 to record the same situation to show the massive difference between the 2.8 and 2.9

https://www.youtube.com/watch?v=oniY99zQQjM

(Sorry for the shakiness, and quality but it is my first video edit ever, the fps should be readable enough) 

I hope that the video and the files attached can help find out what my issue is.

 

Cheers!

 

dcs.log dcs.log.old DxDiag.txt

Edited November 1, 2023 by venec

[Hiob]

Are you on Steam?

Double-check if you are running the Multithread-bin. When you are in the Main Menu, does it say „MT“ in front of the version number?

[venec]

Just now, Hiob said:

Are you on Steam?

Double-check if you are running the Multithread-bin. When you are in the Main Menu, does it say „MT“ in front of the version number?

Not on Steam.

Both running on mt. From the logs:

Quote

2023-11-01 00:09:14.338 INFO    APP (Main): Command line: "C:\Program Files\Eagle Dynamics\DCS World OpenBeta\bin-mt\DCS.exe" 
2023-11-01 00:09:14.339 INFO    APP (Main): DCS/2.8.8.43704 (x86_64; MT; Windows NT 10.0.22621)

Quote

2023-10-31 23:36:10.507 INFO    APP (Main): Command line: "C:\Program Files\Eagle Dynamics\DCS World OpenBeta\bin-mt/DCS.exe"
2023-10-31 23:36:10.507 INFO    APP (Main): DCS/2.9.0.47168 (x86_64; MT; Windows NT 10.0.22621)

 

[The_Nephilim]

Are you using the same headset and resolution in the video?? Which headset do you have I see an Occulus and Pimax?? did you remove the FXO and metadata shader files between update?

[venec]

3 minutes ago, The_Nephilim said:

Are you using the same headset and resolution in the video?? Which headset do you have I see an Occulus and Pimax?? did you remove the FXO and metadata shader files between update?

Both sides of the video are the same settings, same headset resolution (Pymax Crystal). I did a complete reinstall of 2.9 deleted all the folders in program files and savedgames and got the same results.

[The_Nephilim]

Did you have motion reprojection on in one video and not the other? did you try DLSS? Do you have a logitech mouse?

Edited November 1, 2023 by The_Nephilim

[venec]

7 minutes ago, The_Nephilim said:

Did you have motion reprojection on in one video and not the other? did you try DLSS? Do you have a logitech mouse?

 

I tried DLSS no change, also it looks like it doesn't matter what graphic settings I have in-game, it doesn't make a difference, went for low and high end and both do the same with almost the same framerate.

No reprojection on either. (Smart Smoothing on Pimax settings was off at all times)

I do have a logitech mouse o.O, one wired and one wireless.

Edited November 1, 2023 by venec

[The_Nephilim]

I seen a post that I think Flappie mentioned issues with certain Logitech mice.. also did you check to see if you have a core parking issue or is that only intel issue? 

 

What resolution are you running in your Pimax Crystal?? have you tried turning it down just for a test to see if that helps? 

[venec]

2 minutes ago, The_Nephilim said:

I seen a post that I think Flappie mentioned issues with certain Logitech mice.. also did you check to see if you have a core parking issue or is that only intel issue? 

 

What resolution are you running in your Pimax Crystal?? have you tried turning it down just for a test to see if that helps? 

Ill check that Logitech thing.

I did disable the CPU parking but made no difference

I tried all the way to .5 resolution and still did not see much change.

From the video I noticed that the app CPU time considerably higher on 2.9, so it is probably related to CPU or cores, but no idea how to approach a problem with that.

[The_Nephilim]

yes the logitech thing had something I think to do with the polling rate.. OK core park checked.. Yes setting down the resolution should have made a change so maybe something with the CPU then??

 

Your GPU drivers which version I seen some issues with the latest or a few back from the latest had issues?

[venec]

2 minutes ago, The_Nephilim said:

yes the logitech thing had something I think to do with the polling rate.. OK core park checked.. Yes setting down the resolution should have made a change so maybe something with the CPU then??

 

Your GPU drivers which version I seen some issues with the latest or a few back from the latest had issues?

GPU drivers are 545.92, both tests on 2.8 and 2.9 were using the same drivers. Did not have any issues until I updated DCS to 2.9.

[The_Nephilim]

1 minute ago, venec said:

GPU drivers are 545.92, both tests on 2.8 and 2.9 were using the same drivers. Did not have any issues until I updated DCS to 2.9.

yes that is the thing some users had issues with newer nVidia drivers on 2.9.. if you do try and older version use DDU to uninstall them..

[Ramstein]

don't turn on the high resolution is not needed. check the task manager for high cpu usage for programs.. don't run any unnecessary  utils... dumb down aa, antialiasing, msaa, shadows... and bring them back one by one to make it better...

[venec]

20 hours ago, Ramstein said:

don't turn on the high resolution is not needed. check the task manager for high cpu usage for programs.. don't run any unnecessary  utils... dumb down aa, antialiasing, msaa, shadows... and bring them back one by one to make it better...

Settings make absolutely no difference, I can put everything at minimum or off, resolution to minimum and the issue is exactly the same. Also no other software running is using any significant ammount of CPU.

[venec]

21 hours ago, The_Nephilim said:

yes that is the thing some users had issues with newer nVidia drivers on 2.9.. if you do try and older version use DDU to uninstall them..

I saw there was a new driver version released today, but no dice, same problem. I also went back a couple of versions back to 537.58 and still the same, I guess im gonna have to stick to 2.8 and no multiplayer for now.

[Pavlin_33]

11 hours ago, venec said:

I saw there was a new driver version released today, but no dice, same problem. I also went back a couple of versions back to 537.58 and still the same, I guess im gonna have to stick to 2.8 and no multiplayer for now.

Same story for me

[venec]

UPDATE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I found the culprit of low FPS and stutters on my system. HPET, disable HPET and there's a good chance that your stutter or low fps problem will go away.

To disable run a cmd as administrator and type:

bcdedit /deletevalue useplatformclock

bcdedit /set disabledynamictick yes

Reboot

Test that your stutter/low FPS problem is gone.

Edited November 4, 2023 by venec

[truebrit]

12 hours ago, venec said:

UPDATE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I found the culprit of low FPS and stutters on my system. HPET, disable HPET and there's a good chance that your stutter or low fps problem will go away.

To disable run a cmd as administrator and type:

bcdedit /deletevalue useplatformclock

bcdedit /set disabledynamictick yes

Reboot

Test that your stutter/low FPS problem is gone.

 

Mine is already off, shame. Every time I think I've "fixed it" it comes back. Let us know how it goes.