Yeah, I’ve got a Radeon 6800 XT but capping the framerate via its software app doesn’t seem to work on any of my Unreal projects. Must be some issue on AMD’s end, because it’s worked on plenty of commercial games. RivaTuner Statistics Server’s framerate limiting does the trick, though.
I can’t help but think that some sort of engine modification can get IGameMoviePlayer to have a framerate cap, but I’m not quite that experienced yet 