strange colored dots and ultimately "Display driver Intel Graphics Accelerator Drivers for Windows 8(R) stopped responding and has successfully recovered"

Hi,

I recently "discovered" the following issue on my laptop (Clevo; Windows 8.1; i7-4710; 16Gb RAM; Intel HD 4600 & Nvidia GTX860M):

As soon as I switch the Energy Profile to Maximum Performance (in Intel HD graphics control panel; Energy; Power Supply [might be a different word - mine is set to Dutch]), AND the power supply is indeed connected, all sort of strange dots appear when moving the mouse. When I use e.g. Firefox the display becomes "corrupted", the laptop totally freezes and finally the message "display driver Intel graphics...stopped responding" appears.

When I apply the Maximum Performance setting on Battery Power, this does NOT happen (when using the battery).

If I switch the profile back to "balanced" everything goes back to normal immediately.

On the images below:

1st image: black dots appear in the right click menu

2nd image: all those green dots aren't supposed to be there :-)

Is this a known issue?

Thanks,

Bart