Hi +rue,
I attempted to reproduce this but thus far have been unsuccessful. I have a few questions that may help me to locate the error:
Can you upload your dxdiag so I can take a look?
What specific steps are you taking just before the crash occurs?
If you are in a match, is it a player match or a bot match?
Is this limited to using a specific weapon?
Does this only occur on a specific map?
Do you have any firewall programs on your pc? If so, have you made sure to set the game as an exception to your firewall?
Do you have any other programs running in the background?
If yes, do the crashes stop when you stop those other programs?
When did these crashes start occurring? Was it immediately after an update?