adobe animation lagging frame player

hello

when I draw a couple of frames together in animate the frame player lags a lot and when I try to play the animation the all the other places where there is not so many frames the animation is completely fine but as soon as it gets to the more clustered places the animation slows down to a turtle pace and becomes very choppy. I cant even drag the player head over that area without it lagging.

if I restart the program it doesn't help and this has happened with my editing program and my previous animation program so it might just be my computer.

this happens when i have around 7-10 and more frames,