[Client] MAC client crashing during loading screen

I've now had 3 games where my game crashed during the loading screen. I have to tab out and force quit my game and I get a "the game has crashed" screen. No bug-splats, no nothing... I'm now placed in a lower priority queue because of this issue. This has only been happening since 5.3 and it's getting really fucking annoying.

And don't even get me started on abilities not being able to be used during games, which this bug has been around for a few patches now.