AUDIO GLITCH.... I didn't want to give a bad review as I've used this for quite a while with no problem, but I have to remove it following the update on May 7, 2020. It causes audio glitching in any audio (even outside of Firefox) on my computer as long as it's running. Every 10 - 60 seconds I get a slight lag in audio accompanied by a buzzing sound. Very annoying, and it took me a while to figure out this was the cause!