So i've been playing the game for a little while and out of the blue it appears to have become extremely unstable.Sometimes i can play for 15 minutes, sometimes i can play for an hr. it will freeze, then crash.

I've had it freeze/crash during the following instances.:

-During Waves in Solo Play

-During the elevator sequence between floors

-During the cutscene after a boss fight(including the one after beating the boss in the core)

-During a Co-op session between waves

-During Co-op randomly DURING a wave

So far i've tried the following fixes with no real change:

-Disabled Antivirus during play

-Verified Steam file integrity

-Uninstall/Reinstall the game

-Install the  game on the same drive as my Windows OS

-Lowered overclocking settings

-Updated video drivers

-Updated sound drivers(sometimes i would notice the sound go wonky when it would crash)

I'm at a loss currently so any and all help would be appreciated.

Thanks