I wonder if this will help address the system freezes I've been getting for the past month on my early 2011 MacBook Pro. The fix I was going to pursue makes an attempt to disable usage of the "bad" GPU: https://forums.macrumors.com/threads/2011-%E2%80%A2-15-17-in...

Most of my lock-ups seem to happen when I try to access specific sites using Firefox, especially financial sites.