I can't get the performance that I think I should.

[RackMonkey]

I think I have a bottleneck someplace but, I can't spot it.

 

Assume that my DCS settings are "normal" as suggested by most helpful post here.
My CPU is OC'd to 5.1 and Project Lasso sets DCS priority to a single CPU.
The GPU has 300 watts available. Memory is set to 2150 and the GPU is at 2570.

 

When I'm running DCS the FPS stays at @45, frametime at 24. The single CPU bounces around but averages @60% and after loading I've not seen it go to %100.

 

What I don't understand is that the GPU averages %75. The full potential is not being used..Like an engine that's not getting all the gas it could turn into horse power. I have tried moving my setting much higher but the GPU always hover around the %75.

 

Please ask question and make suggestion as I would really like to think that I did not waste my money on a 6900 XT.

[lax22]

Sounds pretty normal to me.

The VR Motion Smoothing caps your framerate at 45fps.

If you lower your settings (i.e. MSAA) you might see an increase in GPU usage if your system can achieve native 90fps and won't have to rely on Motion Smoothing.

[speed-of-heat]

The worrry is your frame time of 24 that’s marginal, is that caused by cpu or gpu?

[RackMonkey]

I don't have anything that would be an FPS limiter, like motion smoothing, turn on. 

 

I selected preset-VR with DCS PD at 1 and SteamVR at %100/%100. Neither the GPU or CPU were any where near running at %100. I then went through the DCS menu, and set to high anything that said it was a high user of the GPU. I was trying to stress it and get it up toward %100. It failed, continually bouncing between about %25 and %75. The GPU never does settle down, it's always doing a %50 bounce. I then tried pushing it by increasing SteamVR up through %300 and the only thing that changed through all this was that FPS dropped and frametime would jump to the mid 20's up into the 30's. The GPU and CPU numbers stayed the same. It just seems to me that there is a lot of performance being left on the table if I can't figure out why DCS can't push the GPU to %100. 

[The_Nephilim]

I'd say if your FPS are 45 constantly then you probally have Motion Reprojection enabled. if that is ON your GPU will not be pushed to the max.. Did you try and manually disable Motion reprojection?

 

 

[RackMonkey]

Checked it again on the OpenVR setting page. It's disabled.

 

[The_Nephilim]

16 hours ago, RackMonkey said:

Checked it again on the OpenVR setting page. It's disabled.

 

but if your FPS are Constant @ 45 it is not disabled. I know what you see in your settings but perhaps that is broke. I would try and see if you can still edit the file in WMR..