i want to use OBS to screen master-quality ProRes 422 HQs or h264 (i.e. not streaming or recording). I have a pretty well-spec'd computer (imac15,1; 4GHz i7; 32gb ram; AMD Radeon R8 M295X) but i'm still dropping frames significantly during playback (https://obsproject.com/forum/threads/media-source-mov-choppy.71208/). Why is my computer perfectly happy playing back the same file through VLC or Quicktime?