I'm getting some flaky things going on with video on a relatively new build. Not sure if it's Windowblinds causing the problem or the nVidia driver. I occasionally run into some minor GUI issues with visual affects and if I get a few small video windows open it seems one or more will stop on it's own.

Currently using: nVidia 6.14.1.8250 (182.50?). I see 190.62 is out.