Below is a screenshot from the activity monitor. I did a hard reboot this morning and reset the PRAM. So far so good. It was frustrating. I have had the computer for about a month and a couple of times a day the music would freeze, all windows would freeze, couldn't move the mouse, and I'd just have to wait patiently until I could force quit something.
As far as "why tabs?", a combo of research and ADHD. Let's say I am looking up a new photo assignment to do with my class. I'll check out another teacher's website, see a good idea, then google the assignment looking at how others present the info. I'll CMD click and open 10-12 tabs to steal the best methods. Then in another window or browser, I'll have Google Docs open typing/copying and pasting to create the assignment. Youtube is open to looking for supporting videos. And then open lightroom, photoshop, etc. to run through. I'll have music playing and a couple of other sites to take a break from the research. Then a song will play, I'll google the band, look for similar bands, check a reddit thread for top albums by ... and so forth.
I am not doing that with this M1 Air, but that is what I have done for a decade or more with a MacBook Pro. Another example would be researching between 14" MacBook Pro and M2 Air. I'll google reddit, macrumors, etc. CMD click 10-12 threads open. Read through them for research while listening to music, checking email, checking social media, etc. Plus, still have other tabs open. I'll get distracted or bored, take a break from the current research, then get into checking something else. I'll leave the tabs open to come back.
I have had 60 tabs, multiple browsers, slack, mail, music, messenger, photoshop, etc. all open on old MacBook Pros with 16GB ram and they wouldn't freeze. Maybe not typical usage, but that's how my mind works.
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