Reminder: 10.6.8 was ? but not before, same goes for 10.3, .4, etc. Leopard, Snow Leopard, Lion it was only the last update - and then the rat race starts all over again.
The last 10.10 on were better. The yearly cycle is killing iOS and macOS. Began when iOS teams were brought over to help "fix" Mac OS X - the iOS-ification if the Mac has been a huge gamble and probably failure.
""DO NOT INSTALL CATALINA 15.2". "
I concur.
Nothing but problems on my MacBook Air.
None of whom have been solved.
Just don't get it with Apple any more. It's like they're just releasing upgrades for the sake of releasing upgrades.
Lot's of people also had major problems with their iphones os 13 until finally when 13.3 came out and it got more stable. For a while they were releasing one update after another.
Just look at some of these dates:
iOS 13 - Wikipedia
en.wikipedia.org
This is not the same Apple as it was before. This is all just one rush job on top of another.
Where's the quality control?
Wealthiest company in the world and these beginner-like problems are happening.
I have 2015 MacBook, 10.5.2, band new Motorola modem, new WiFi 6 router (near double up/down) and use different name/password for 2.4 and 5Ghz.
Real bad cell signal so on phones I tend to use WiFi but with Airplane mode on.
I can see WiFi from homes up and down the block and in back so some but not a lot of congestion. Not like dense urban areas. The reason for new equipment, multiple lightning storms and nearby hits including some scary transformers that exploded on the corner. Took over a month for ISP to clear their mess from that August summer storm. And everything is grounded and on UPS but it was too much. Second time in about 12 years. JS