134.0.x has seemingly brought in a conflict in the system. When I have Firefox open, the mouse becomes jumpy, the keyboard is often interrupted, and if any music is playing on the system, it becomes a buzzing sound. This buzzing is coincident with the keyboard and mouse issues. I have added no new software or hardware to the system, a Windows 10 desktop. This update has forced me to revert to Edge if I have any need to write, use the mouse, play a YouTube video. Thank you.