Installing the old drivers made the framerate drops a lot lower (first it was 20-40 now it's 1-4). I must say though, the reason I had less frame drops in my log is because my madVR settings were a lot lower. Still, I'm using the absolute lowest madVR settings and I'm *still* getting frame drops. Extremely weird, since even a potato quality laptop from 2012 can run madVR + SVP without framedrops, yet my decent PC with a GTX 970 and an i5 can't.
Oh, and sometimes SVP gives me a popup about "OpenCL causing freezing/problems" or something along those lines. Does this have something to do with my problem, perhaps?
EDIT: I'm going on holiday for a week tomorrow, so I won't be able to try anything else for now. I'd appreciate it if you could keep coming with solutions, though. I'll try them all once I'm back!