https://bugzilla.kernel.org/show_bug.cgi?id=204559
--- Comment #13 from Maxim Sheviakov (shoegaze@tutanota.com) --- I'm on kernel 5.4.7 now and seems like this particular issue is fixed - I tried playing some movies with runpm enabled and things seemed to be okay. Though it looks like dGPU performance with runpm is considerably worse than without runpm, but I guess that's another issue :)
Can anyone confirm if everything's fine now?