Hi, When I run Firefox and use YoutubeTV I get slowness from internet. When I run YoutubeTV on Edge no problems. I have tried running it on Firefox in safe mode and with Bitdefender disabled still have issue. Please see attached screen shots. The delays of up to 3 seconds cause browser slowness when I try to browse to get details of something I am watching like on IMBD etc. I have been a long time user of Firefox and really don't like having to use Edge as my YoutubeTV browser. Firefox Version 94.0.2 Edition Windows 10 Pro Version 21H2 Installed on ‎8/‎21/‎2021 OS build 19044.1387 Experience Windows Feature Experience Pack 120.2212.3920.0 I can send you HWinfo64 report if you need it.