AI opponents tanking VR frame rate

(I wasnt able to post this in thet support forums)

Hi ya

Im not able to have more than 5 AI opponents in VR without the FPS tanking can you help?
I have an 8 core 3700X, 32gb RAM and an RTX3080 so that "should" be able to punch through this game i imagine? Im guessing its CPU related so the games not using all my cores? I changed the assetocorsa.ini file thread lines but still no luck. Prioritising power on GPU and CPU has not done anything either.

Here are the collection of details so far...

I run an HP Reverb 1 (2160x2160 per eye)
Windows 10 is up to date
Latest motherboard BIOS updated
Latest Nvidia drivers re installed
GPU boost clock confirmed working up to 1965Mhz
Checked USB devices in device manager, no conflicts

Verified game data
Content Manager Shader patch re installed
NEW AI BEHAVIOUR in the shader options on and off did not affect anything
PPF is off
Vsync is off
Content manager has no super sampling set.
Steam VR has Super Sample filtering on Auto, render quality High and render resolution on auto. Turning these off made no effect
Anti virus exception created for Assetto Corssa

When I run the in Game Benchmark, the average is 70fps with min 60fps (lots of AI)

Averages I get during my testing when testing….
GPU load 45% to 55%
CPU load 11% to 27%
GPU RAM – 5GB of the 10GB used
System Memory – 24GB to 29GB of the 32GB used

(Brands Hatch Indy / Lotus Eleven trials)
1) Trying practice with no AI – locked 90fps

2) Track day with 14 AI – 63 to 88fps. In the pits with AI around me the fps goes down. Also after Graham hill bend it also drops, im presuming because there are lots of AI in the pits near. 90Fps to clearways but then another fps drop down the start finish straight, again AI are close/visable. Sporadic is the word really, with commonality being the AI

3) A track day with 5 AI or lower and im locked at 90fps. Any more and things start to tank.

Is there anything I can do?

if its any help the Render stats app with 14 AI in game shows :-
FT 11ms
Main_T 94%
PHY 18%
PHY_late 6
FMOD usage 7%
All others are zero

Going through all the content shader patch options I have managed to salvage a few frames by deactivating Smart Mirror and turning off the mirror in Asseto Corsa settings to. Obviously not workable to have no mirror and I still get increasing fps drops the more AI I load in. I was surprised to see my system memory using 24GB of RAM

I reduced the replay quality and size and i cleared the Microsoft/FTH/State lines in the registry and rebooted but alas nothing

 

ADDITONAL: Going through all the content shader patch options I have managed to salvage a few frames by deactivating Smart Mirror and turning off the mirror in Asseto Corsa settings to. Obviously not workable to have no mirror and I still get increasing fps drops the more AI I load in. I was surprised to see my system memory using 24GB of RAM

I reduced the replay quality and size and i cleared the Microsoft/FTH/State lines in the registry and rebooted but alas nothing.

Can you help?

 

Hi, My system is by far slower than yours and I have the same loss of fps, turning shadow off is the most efficient for me. Not perfect but at least I have my mirror active. Note that a few track are better, at Spielberg 1974 version 2.1 I have a stable 90 fps (Oculus) with 10 opponents.

 

Thanks Andre. In despiration i turned everything i could off or to lowest and I still got the issue. Its got to be something simple im missing?

 

if its any help the Render stats app with 14 AI in game shows :- FT 11ms Main_T 94% PHY 18% PHY_late 6 FMOD usage 7%
[4:31 PM]
All others are zero

 

ITs happening in rFactor 2 now so im thinking its system rather than software. Either the drivers for the RTX3080 or a BIOS setting on the mobo? (Asus ROG Strix X570F)?