Game Accepting on Mac

When you accept a game and either someone else declines/fails to accept, or someone dodges, you go back in queue and accept the next matchup.

On Mac, the screen will freeze until the next matchup is found, won't let me accept and takes me out of queue. I've gotten warnings over the past few months and I really don't want to get leavers :(

**Other issues are that it takes about 5-10 seconds for the screen to unfreeze once we get in champ select, search for champions is really delayed, banning champions has about a couple seconds' delay, and opening the panels for masteries and summoner spells also have a slight delay.