The flash version of the game has been (basically) unplayable for me due to the same issue. I've managed to suffer through some multi-player rounds (alt shot, match, stroke, blitz, & CTTH) BUT it's a chore. The game play is almost like a strobe effect where I see every nth frame. No smoothness of the meter or video exists. I had a great base of Alt-Shot friends too and I miss them. I've embraced the PCEA version where the meter issues are pretty much resolved. Oh, and I also have the issue when playing CC UEL tourneys, so, it's not only multi-player play that is affected for me. And I've tried various browsers, cache clearing, etc. etc. etc.