I found the problem
- Run cmd as administrator
- Added "" after the folder like this:
expand C:\PSOCache*.rec.upipelinecache C:\PSOCache*.shk C:\PSOCache\TEST_PolyCoreUE5_PCD3D_SM5.spc
Build included certificate and i waited fps boost for my VR app, but nothing interesting happened. I checked RHI logs. It opened .stable.upipelinecache file with correct entries (which was included while cooking). Also checked windows-desktop setup and it looks like with included PSOs in showed less FPS on D3D12 than simple with DLSS on D3D11.
@jaker3278 did u note FPS boost?