After some reinstalling and testing I can confirm that the GPU acceleration actually works for me. It just doesn't register in any GPU load programs, probably because it's not actually rendering frames via GPU completely.

5g profile works reasonably well for me now. Around 60-70% CPU on difficult files. That's on a 2600K @ 4.3 GHz, 7950 Vapor-X radeon @ 1150MHz (1400MHz memory, voltages raised a lot to allow for it).

I have the same problem and an additional one.

After installing, SVP only uses the CPU despite GPU acceleration being enabled. After resetting the profiles, it stopped working completely and no longer detects videos playing in MPC-HC.

When it worked, it managed 60fps at 1920 on the CPU alone, barely (2600K @ 4.3 GHz), but it should run way better once I get it to work on the GPU (an overclocked Radeon HD9750).

I am yet to restart my system to see if that helps because I currently cannot do that, doing some uninterruptable stuff.

Any suggestions on how to fix it?