(Fixed) Windows 10: YouTube - Full Screen mode - problems on Firefox
I've problem with YT HD (1080p up) in full screen mode on Firefox. When playing there is lags and frames drop. However there is not problem at all when using MS Edge. In this video I've been using 4K clip http://bit.ly/ZMLOuV to demonstrate this issue and my smartphone for recording. First part shows FF problems and lags when playing on FS. 2nd part is Edge and smooth and easy playback.
Problem fixed: FF and VLC have been using integrated IntelHD GPU instead of GFX. Switching to GFX solved all problems