Maybe it is interaction between it and another addon. I just removed and reinstalled all my addons last week and performance was dramatically increased. Well,

Maybe it is interaction between it and another addon. I just removed and reinstalled all my addons last week and performance was dramatically increased. Well, not all my addons - turns out though my Scriptish has been installed since Firefox 3 (now at 45), it wouldn't reinstall after removal for compatibility problems. Not sure why that wasn't automatically detected, and that may have been the performance issue