Slow Upload Speeds To YouTube Using Firefox

[Adore33]

I've been experiencing consistently slow video upload speeds to YouTube for some time now. According to my speed tests, my upload speed is between 250 and 300 Mbps. However, while using Firefox and monitoring my upload speeds, I've noticed that my upload rate is in the kbps range, often hovering around 1.50 Mb/s from video to video. It seems that there is something inherently wrong with Firefox that is causing this issue. I have tried various troubleshooting methods, from simple to complex, but nothing has resolved the problem. I’ve reset my Gateway, updated Firefox, and disabled add-ons/extensions, yet the issue persists. When I switch to the "Edge" browser, the uploads work just fine. If anyone has found a fix for this, I'd like to hear about it. As it stands, I'm having to use the "Edge" browser to work around this problem.

[Msaygili]

Exact same problem; thank you for kindly clarifying that on Edge speeds are okay. 

For anyone who is going to suggest; changing user agent doesn't work. Youtube probably intentionally throttles pushes so people would use Chrome (or Edge perhaps?) instead of Firefox or there really is something wrong with Firefox right now. 15 minute uploads (from Edge) are 1.5h+ on Firefox last couple of weeks.

[Adore33]

I've tried "Firefox" on two different computers with the same results. One of those computers is basically new as well. "Edge" works fine on both computers for uploading speeds to YouTube for me. I wouldn't be surprised if Google isn't throttling "Firefox" just like you said. It could also just be an issue with "Firefox", who knows. I also can't confirm if uploads are good on "Chrome" as I don't want to use that browser. Since "Edge" is already forced upon us all who have Windows, we may as well use it just for uploading.