AO crashes my PC: (almost) SOLVED!

Windows 7, SketchUp 2017 Pro, nVidia graphic card.
AO has completely crashed my PC several times (in SU window, default SU resolution), on quite simple projects.

I think I’ve found the trouble source: my newly installed antivirus was interfering with the AO calculations when trying to update itself.
I’ve listed SketchUp with the antivirus software as to give me a break when in SU: since, AO works great.
Hope this is useful…

Simple interior test…

Testing colored cuts…

Well, I thought it was over, but it happened again: AO crashed my PC!?!

Lately, I discovered that crushing occurs when rendering in the SU screen only: it looks as if when rendering in separate window, no crush happened…

Regards,
romark