https://bugs.freedesktop.org/show_bug.cgi?id=73947
--- Comment #4 from Alexander Tsoy alexander@tsoy.me --- Sorry, my last comment is incorrect. Seems the card just cannot reliably work in a high power states. When no 3D apps are running, power profiles can be freely switched. If I first switch profile to "high" and then run Unigine Heaven (I didn't test other modern 3D apps yet, but probably the result will be the same), then the GPU lockup.