Interesting situation here. Using potplayer/ffdshow/avisynth/mvtools2 combo to interpolate videos to 60fps. Also bitstream audio to external receiver. With combo I mentioned (also with MPC-HC as a player) bitstream audio stutter if framerate detection is set to Automatic in ReClock Properties during playback. If I manualy force it to 60fps bitstream audio starts to work correct and video becomes smooth without framedrops. So, I would beg for a possibility to remember selected/forced framerate if possible in some future version. I would be grateful. Edit: a solution would be to add 60fps under Assumed framerate when not found.