YouTube videos in full-screen mode block Firefox

[Joe Zeff]

On 10/08/2015 11:09 AM, Paul Smith wrote:
> Thanks, Doug. It gets full-screen immediately, but with the image and
> sound both frozen for one minute or so. Also Firefox freezes for the
> same time.

Does the window go dark?  If so, that indicates that Firefox is very, 
very busy; if not, either you don't have things set for that or it's 
something else causing this.