After an hour or two of use, Firefox keeps freezing. I'm on a new macbook pro (sequoia 15.7.2.) I have removed and re-installed newly downloaded versions of firefox three times now: same issue. At the Apple store they can find no fault. It just froze again so I had to restart it. The activity monitor (see screenshot attached) said Firefox was taking up 26.9GB - it always does this when it freezes. How can I fix this?