Version 4.12.5 Chrash

i have 2 graphics cards in the system

NVIDIA Quadro K4200
GeForce GTX 980 Ti

The Quadro is set to do Graphics rendering only and the GeForce GPU does the Rendering. (Setting in the Nvidia Settings) - but even if i disable this setting i.e. the Quadro does both rendering and Graphics UE behaves the same.

Is this concidered a Optimus configuration too or is this only with a Tesla card??

i checked the software list but there is no software i#m using listed

Jörg-Mark