Owners of GeForce 600/700/900 series cards, please chime in

I found a fix for flashing objects in 1.11.6.0 in the Debug menu :grinning: :sunglasses:

Turn off: Options | Volumetric atmospheric effects

It immediatly removed the flashing sky. Turning it on the flashing sky comes back.

I have a GTX-750 TI on a Xeon 4-core