Same issue over here. I play koth for 10-30min aaand crash... -.- FIX IT QUICK GUYS!
System:
CPU i7-4790K @5.2GHz
GPU Inno3D GTX 980
Mainboard ASUS Maximus VII HERO
PSU Corsair AX860
Storage 1x 250GB Samsung 840 EVO SSD, 1x 512GB Samsung 850 EVO SSD, 2x 1TB WD Green

ALL DRIVERS ARE UP TO DATE

Crashes:

1. https://goo.gl/0vTgIi
2. https://goo.gl/ET3LQk