macOS Firefox Poor Throughput Performance Compared to Chrome

[southerndoc]

When I'm using Firefox, I cannot get >6G down/3G up with my OST server on my Synology RS1221+. With Chrome, I get 9.7/9G down/up.

I filed a bug report with Mozilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1939152

Not sure if there is an issue with OST encoding that could be tweaked to help. Looking at macOS Activity Monitor, Firefox is using a lot of cores with my M1 Max Mac Studio.

[openspeedtest]

Firefox has a known issue that has been reported for quite some time, yet it still hasn't been resolved.