This issue has been occurring the last 2 months. I play StarCraft II co-op only and I use it to turn my brain off from other games while enjoying the game before I go to bed (kind of like playing connect 4 after playing chess for hours).
This is the most recent code. The game runs fine up until i launch any co-op match, sometimes it doesn’t finish loading, other times i get into the game for maybe 20 seconds, enough time to say GLHF, then boom I’m the jerk for “quitting”.