I had definitely tried that before, recall issuing a 'mkdir .mozilla/plugins' & moving a .so in there. Can't remember why I rolled that back and reinstalled it

I had definitely tried that before, recall issuing a 'mkdir .mozilla/plugins' & moving a .so in there. Can't remember why I rolled that back and reinstalled it through apt thought. Anyways trying it again nonetheless, the blinking is still going on with scrolling, going to see if performance/crashing at least improves.