Screenshots taken during the training level at 1920x1080 but I had to resize for the upload as they were too big.

When I started looking up (y-axis), the screen would start to show these flickers. When I'm looking at the sky directly above me, these blue screen flickers would come.

Settings are all default except for Windowed Mode (Disabled) and Show Window Borders (Disabled).

This shoudl be fixed with the upcoming patch for this game. This is what's said in the Changelist for 12/18/2015

- Clamped XY coordinates in light scatter shader. This fixes very bad rendering artifacts caused by the shader in certain graphics drivers.

I hope we'll have this patch here on GOG soon.

That fixed it, thanks.