I'm not necessarily looking for a solution, but curious if others are seeing similar issues! A couple years ago I switched from Google Chrome to Firefox because Chrome was a notorious memory hog and kept making my Macbook freak out (i.e., hang, crash, fan acceleration). But after I upgraded to Big Sur 11.5 a few weeks ago, my Macbook started freaking out again, even with Firefox. Here are some things I suspect are causes: * AdBlocker Ultimate add-on. Every now and then my fan would go nuts, the add-on extensions in the upper right of my browser would glitch, and Firefox would hang (tabs refuse to load, etc) for about 30 seconds. Once I turned it off my computer has been just fine. * Dark Reader add-on. Same phenotype as AdBlocker. * My caps lock key?? This one is super weird. I noticed that when I had the above two add-ons enabled, hitting my caps lock key would commence computer freak-outs. Anyone else seeing this? If so, what are add-ons you'd recommend that function similarly to AdBlocker and Dark Reader?