investigating Dramatic FPS drop in VR with the last patch

[scorpion80]

As stated in the title, when I fly with the Ch, after the latest patch, I have a FPS drop, big fps drop. I also tried to take Uh1, Oh58, AH-64, Ka-50, but everything goes smoothly. When I take the Ch I fly with a maximum of 12 fps.
The system is composed of a 5800X3D, a 3080TI and 64 gb of ram.

What broke with the Ch in the latest patch?

[LuseKofte]

Online or offline? I noticed a drop when a lot of things happen in Rotorhead server. I will take the hook up for a ride to test now at this second and see

[LuseKofte]

I did test. And found no noticeable difference in my end. I have a 3080 gpu

[scorpion80]

Was online... 

In the same situation i took the Uh and was really smoothy... 

[LuseKofte]

Well I know the cockpit itself is a bit demanding, you might tune down your settings more when flying chinook. I have them tuned lower than needbe on lighter aircraft

[dmatt76]

I have the same. stable 45 fps in every module but in Chinook it drops to 25-30, no more. It was much better before the patch.

[BIGNEWY]

On 12/21/2024 at 3:43 PM, scorpion80 said:

As stated in the title, when I fly with the Ch, after the latest patch, I have a FPS drop, big fps drop. I also tried to take Uh1, Oh58, AH-64, Ka-50, but everything goes smoothly. When I take the Ch I fly with a maximum of 12 fps.
The system is composed of a 5800X3D, a 3080TI and 64 gb of ram.

What broke with the Ch in the latest patch?

Please add your dcs log and dxdiag here we can look for clues 

[Mr_sukebe]

I found that dropping (internal) Textures to Medium helped a lot.  My assumption is that the snazzy new 4k textures are overflowing the VRAM on my 3080ti.

I have to say, that I don't feel short changed by the Medium textures.  Give it a try and see what you think.

[BIGNEWY]

2 hours ago, Mr_sukebe said:

I found that dropping (internal) Textures to Medium helped a lot.  My assumption is that the snazzy new 4k textures are overflowing the VRAM on my 3080ti.

I have to say, that I don't feel short changed by the Medium textures.  Give it a try and see what you think.

4K textures are demanding for sure, the team are aware and we have a report open. 

But the OP had mentioned he had seen a drop in FPS between this latest patch and there has been no change to the 4k textures. If it was higher before and is lower now we should investigate it. But we do need to see the dcs and dxdiag to try and diagnose. 

thank you 

[prestupnik]

Problem fps  in VR

DxDiag.txt dcs.log ch-47f 14 fps.trk mi-8mtb 35 fps.trk

[dmatt76]

On 1/2/2025 at 11:43 AM, Mr_sukebe said:

I found that dropping (internal) Textures to Medium helped a lot.  My assumption is that the snazzy new 4k textures are overflowing the VRAM on my 3080ti.

I have to say, that I don't feel short changed by the Medium textures.  Give it a try and see what you think.

I have my textures set to medium because of the Apache. That was the first module which couldn't handle the high textures in VR with my setup, it was unplayable in Quest 2 - 5 fps and glitches all over. I changed to medium and it is back to butter smooth. F-16 and F/A-18 works great on high settings. Now Chinook can not handle medium textures - luckily not 5 fps, just 25, but still - I remember when it launched it was much better.

[Matt Glover]

5950X and 4090 here CH47F unflyable in Syria. Track too long to upload. was fine in Gazelle and apache right before jumping in CH47F. dcs.logDxDiag.txt

[MAXsenna]

13 minutes ago, Matt Glover said:

5950X and 4090 here CH47F unflyable in Syria. Track too long to upload. was fine in Gazelle and apache right before jumping in CH47F. dcs.logDxDiag.txt

Try with textures set to medium. It should not happen with a 4090 though... 

[av8orDave]

Just picked up the Chinook for the first time in a bit. Before flying the Chinook, I was flying both the F-16 and the AH-64 with a rock-solid 72fps. With the Chinook in Nevada, my FPS was suddenly a 36 - 42 fps stuttery mess.

System is a Ryzen 9 7950X, 4090, 64GB DDR5, on an SSD, Win 11 Pro. I'm not running any mods, totally clean install.

 

[av8orDave]

20 hours ago, MAXsenna said:

Try with textures set to medium. It should not happen with a 4090 though... 

I seem to be having the same problem. Dropping textures to medium didn't do a thing. System is Ryzen 9 7950X, 4090, 64GB DDR5. Quest 3.

[MAXsenna]

I seem to be having the same problem. Dropping textures to medium didn't do a thing. System is Ryzen 9 7950X, 4090, 64GB DDR5. Quest 3.

Oh, lord! Then there is some other issue at hand. I hope they can get to the bottom of this.

Sent from my SM-A536B using Tapatalk

[scorpion80]

I'm really sorry for the delay. 

Here attached the dcs log and the dxdiag

 

 

DxDiag.txt dcs.log

Edited January 21 by scorpion80

[BIGNEWY]

14 hours ago, scorpion80 said:

I'm really sorry for the delay. 

Here attached the dcs log and the dxdiag

 

 

DxDiag.txt 110.23 kB · 1 download dcs.log 354.8 kB · 0 downloads

Hi, just some observations, you are running a lot of unofficial mods and some errors are in the log due to them. Might be worth removing them and running a repair. 

Custom Mods
Tacview,XXI Gruppo Mod 092024_1-Lupus3_Massun92-AssetPack,Hercules ver 6.8.2,XXI Gruppo Mod 092024_2-Kero,36StormoVirtuale,DCS-SRS,XXI Gruppo M..."],XXI Gruppo Mod 092024_1-Lupus

Error
'=' expected near '-'
Line
6
Script
C:\Users\Utente\Saved Games\DCS.openbeta\Mods/tech/XXI Gruppo M...

In Windows:
Disable Game Mode
Disable Hardware accelerated GPU scheduling

see if that helps at all. 

edit: threads merged