Just upgraded from 13 to 16 (352). When previewing a video event with bezier masking and pixelation video freezes but audio continues until I kill Vegas.

Messing around with preview settings didn't appear to make any difference so was getting pretty frustrated as no issue on V13.

Turned off GPU acceleration and all good. Preview does not seem affected.

However this does not seem right!?

I have an i7-6700 with 16GB of RAM running current version of Win 10 Pro. I am using the inbuilt graphics, and also a DELL 3100 docking station with a UHD monitor and HD monitor. Vegas is only on the UHD monitor which is actually connected to the graphics port directly though at the moment.

Latest drivers for the graphics and docking station installed.