Extreme lag during raids

[pallypaladin]

I took several months off, and now I’m back playing due to being stuck at home (thanks covid-19..). I have 2 pcs, a desktop and a laptop. Both have always ran the game fine, but since coming back I notice any time I’m in high traffic areas the game becomes practically unplayable on my laptop. My desktop doesn’t skip a beat. I’ve tried copying my install files from the desktop to my laptop to make sure something didn’t get goofed up when I updated the most recent patch, but I get the same result. I’ve read about the lighting changes, but sounds like I can’t turn that off.... Is there any resolution that others have had success with, that have experienced the same issue?

Again....a few months ago the same pc ran fine. Thanks in advance