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Sorry for late update, I have updated the GFX drivers and after using it a while more I have found out that it hangs when using my 4K monitor. Thats on duel display:
 - 1920 *1080 do not hang,
 - 3840 *2160 hang often, with images from different physical harddrives, do not hang with OpenGL
So I will try to continue to use it with OpenGl and report back if crashing continues. 
Thanks for good and informative answers, I have been away therefore I have responded late.