starbasessd

I forgot: Which version of Fedora 32? Desktop, Workstation, Server?

Also: Fedora is up to 34, are you current and up to date?

This sounds like an issue with the particular installation, maybe something not being handled properly either in FF, or Fedora 32.

Please let me know after you've brought it up to more current versions of Fedora and FF, and I'll continue trying to help.

Understood. How do you updates to those apps? Are you running pre-compiled binaries for FF and python2?

Holy heck. 740 updates to Fedora34 even before getting dirty... I'll grab Fedora33 in a bit to do the same thing.

I have a 400Mbsec and I'm not looking forward to it..

And if you kill firefox? What other browser is installed if any? And you said if you connect from another PCs web browser, it doesn't overload, correct?

Looks like it's a firefox issue. It is killing your CPU. If you go to youtube or something else, is your CPU still killed?

So, what happens if you turn off Hardware acceleration?