In case someone happens to have performance issues with madVR rendering (excluding cases where DXVA scaling seems to work) one thing that could cause it is a buggy motherboard bios.
Same HW, but different MB bios versions resulted quite different texture upload speeds:
Quote:
A8R8G8B8 Texture speed test:
default: upload 17 fps, download 138 fps
dynamic: upload 9 fps, download 8 fps, trick download 121 fps
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vs.
Quote:
A8R8G8B8 Texture speed test:
default: upload 132 fps, download 167 fps
dynamic: upload 239 fps, download 9 fps, trick download 131 fps
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