Your system information

• Steam client version:
• Distribution (e.g. Ubuntu): Arch
• Opted into Steam client beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

Steps for reproducing this issue:

1. Play on aztec
2. It takes sometimes up to 15 minutes
3. Then OpenAL crash. Something about an underrun.

I should mention that using the "stopsound" cvar at the start of every round fixes this, as it stops the rain sound effect.