Not sure if there is anything new in the following logs, but I've had:

• Blackops Experimentals not firing, sliding across the battle field
• Sim "crashes" where the game still lives and responds, but units stopped moving completely, nothing would build etc.

Logs:
Blackops+Total Mayhem +rando others
game_20507307.log

Blackops+rando others
game_20506771.log
game_20500668.log