Game is crashing 1-2 times per hour on average

When mapping heavily I'm experiencing frequent game crashes. There is no specific error, and I can't deduce anything about the crashes that immediately jumps out as unique or consistent amongst them other than mapping and attacking monsters when it happens. I am using Holy Strike, although I've seen others with no issues on the ability. I'm using AMD CPU and GPU as well although it doesn't seem to be relevant.

Edit: to fix title