I don't know wtf you did on the new update but I have same video settings as before (all on lowest or off and game on fullscreen) and I can't run the game anymore...
It works until I get massive stutering (more like screen freezing because it last so long) and I have to turn the game off...
Maximum I got it working was 4 waves on push.

turn off : Keep loaded textures.

it's off already

now I get freezes even in push 1st wave even worse when fire support get called
before I runned everything ok

so I turned texture streaming pool from off to low and it works now, if you have stutter and shit try that