on Firefox (91.0.1) the latest beta is (very) slow, it also make a bump in memory usage (350Mo approximately each time the window is opened) and CPU usage is going up a lot (up to 10% on my i9 9900k which is a lot), I can hear the fans starting running each time I open the window. Happened either with connection to the app enabled or not.
This was definitely not the case with 2.0.5 version.
Cannot test with chromium based browsers as the beta is not out yet.
1Password Version: 8.2.0-56-BETA
Extension Version: 2.1
OS Version: Win10 21H1