[Yosemite] Experiencing system crashes in-game

I've recently started to notice that playing consecutive matches on my system will over time cause either the client to crash or my entire system in what appears to be a major lag spike. When my system crashes it takes a while for my system to restart which also includes a long decryption process which I'm in the process of fixing. I've gone through a bit of the logs skimming for error messages and I can't seem to find any that could correlate to my crashes. If anyone can help me give an idea of what to look for/things to grep so I can help out with digging through these logs.

Also, this issue has led to me being marked as a leaver/AFK. Is there a way to resolve that as well?

EDIT: also found the kernel dump logs as well