I would suggest adding a transition: 0; (plus all prefixes of course) on #content #tracks-display table tbody tr.track:hover At the moment the transition in

I would suggest adding a transition: 0; (plus all prefixes of course) on #content #tracks-display table tbody tr.track:hover At the moment the transition into the hover is making it feel laggy. I'd also reduce the transition time to something like 0.1seconds, or preferably drop it entirely. It's distracting and fussy. Apart from that, good job! Everything seems to work well on latest Chrome.