I can't play the piano, the only string names I know for sure are the big and little ones - E I believe - and my ear is my guide. If I'm playing in a group of the folks I play with we only play as fast as our slowest player. And I thnk our music is exceptional.

If we do decide to tear up a piece - really fast - then the slower pickers usually chord along or set it out and smile at the fun -

Timing and practice - only answer -

Steve