MT - Performance lost, worse frame time - Threads running through E-Cores?

[7Mistral8]

Tested with 12700KF (no overclock, HT/SMT ON) with RTX4090 and VR (Hp reverb G2, 100% resolution, opencomposite, openXR toolkit) Windows 11 last version , bios and drivers fully updated 

Using No-MT version everything goes perfect, AIDA64 shows load on some P-Core but no E-Cores (first image). Using MT version I see load on all E-Cores and a single thread on one P-Core at 100% (second and third images). Shouldn't all threads run over P-cores?

In both cases GPU load is 91%-92%. Comparing performance between two versions, I've noticed more stuttering on MT version and noticeable less smooth. FPS are the same 60-70fps but Frame time get worse (last two attached images).

Edited: On MT version I've changed the affinity of DCS.exe to force using only P-Cores, using task administrator. Then the E-Cores load dissapears and there are more threads running over P-Cores, BUT no performance improvement, frame time problem still there. 

Edited 2: I've removed github OpenComposite and then force to use internal openxr with " --force_enable_VR --force_OpenXR", in MT and no-MT versions. Same results. No MT version is smoother than MT in VR, foer example when making fast turns at very low altitude near cities forcing all scenery move many objects fast.

 

 

Edited March 12, 2023 by 7Mistral8

[divinee]

I think i’m having the same problem. I made a bug report in MT area if you want to check?