CPU Usage WAY Over 100%

I am running Brave Version 1.21.74 Chromium: 89.0.4389.72 (Official Build) (64-bit) under Ubuntu 18.04 LTS.

A keep having problems with sites crawling or crashing. One in particular I noticed that the CPU temperature had jumped from 59c to over 90c before the page crashed. While the temps were up, I ran ‘top’ and it showed the CPU usage of one instance of brave at OVER 400%! I say one instance but I only have one instance of brave running, while there are anywhere from 3 to 6 entries as a given time. I tried that same page a couple of times and every time, usage was anywhere from 200 to 400%. If it matters, this site is https://www.mycooler.com/ but this is not the only one. I have tried this with hardware acceleration enabled and disabled… Any help / ideas?