DCS 2.9.16.10523 with AMD 9950X3D gives periodic high CPU core usage (on non X3D V-Cache cores)

[darkman222]

Having switched to an AMD 9950X3D I had a perfect stutter free playback until the DCS 2.9.16.10523 terrain engine update came out. I have periodic stutters now. Not severe but immersion breaking in VR.

Using fpsVR I realized that it might be related to the CPU frame usage graph showing periodic spikes on the cores that are non v-cache x3d cores. Aka the ones that are not meant DCS or games to be run on. This was not the case before DCS 2.9.16 came out.

 

These high CPU usage spikes sometimes seem to transfer over to the x3d cores then disappear.

 

I am experimenting with process lasso to tie DCS to the X3D cores only. Seems to help, but still investigating.

 

In the image I marked the x3d processors where DCS should run on.

System is a AMD Ryzen 9 9950X3D, MSI X870 Gaming Plus, RTX 4090

In the video on the left side of the comparison you see the recent DCS version and how the CPU spikes appear and disappear.

DXdiag and log attached

 

 

dcs.log DxDiag.txt

Edited May 27 by darkman222

[Limaro]

You can Test the App "Process Lasso" to improve workload of CPU.

[darkman222]

Yeah I already tried it. Although I could use process lasso to improve performance with my previous Intel PC it does not help with my recent AMD PC. The best performance is without process lasso actually.

What I am running into now is also the one core bumping up to 100% usage (Core 0) . Not sure how that affects performance too.