I have people that watch on too high quality and the bar that I thought changes their speed actually just kicks them off completely instead of just making it slower
Are you using windows or android ? both speed control should work. on Android, there are certain phone does not support, our next release should handle this problem.
on windows, you need to check if your PC has personal router enabled. when this happen, it usually means it can only cut off not speed control. we have plan to release a fix for this , but need wait after android.