[el Filou]

I've always been convinced there were issues with how madVR interacted with copyback decoding, seeing as every individual rendering step takes a hit in the stats in copyback when performance is decoding-limited due to an old system, look at this for example: https://forum.doom9.org/showthread.p...09#post1885609
The performance impact is not just on the decoding part. Feels like copyback hangs some paths in the GPU (it's not the PCIe bus), and if the system is limiting copyback speed then this impacts other rendering tasks.