Best GPU stress benching software?

[sandradumas]

I overclocked my GTX 1060 and was able to run both Unigine Valley and Heaven for 20 minutes with no stuttering or artifacts. I also set a more aggressive fan curve and was getting temps below 80.

But when I start playing Rise of the Tomb Raider, it crashes 4 minutes into the game (although the benchmark works fine).

slope

I did manage to get a more stable OC just by using the game to test, but it would be nice if I have a tool that really stresses the GPU.