Im using the latest build and noticed sometimes there will be a jagged line or a streak across the middle of the screen. I noticed it also with a 2 week old build. I have the latest drivers for the GTX 950. This was tested on 20" TV and 50" Plasma both times 1080p in emu graphics and connected via HDMI.
Lenovo IdeaPad 320S | Windows 10 x64 | i5 8250U | 8GB Ram