1Password browser and Mac app work for me without the issues you mention, paying user since version 5. I'm on a late 2013 MacBook with Catalina. I had the beachball issue in Safari but it went way after I restarted once.
I tried LastPass but on the first day it didn't save a password I generated like 5 seconds earlier, and I stopped trying it immediately.
I tried LastPass but on the first day it didn't save a password I generated like 5 seconds earlier, and I stopped trying it immediately.