I've been a lastpass premium users for a few years. The thing that annoy me the most is lastpass somehow really slow down any page that has a lot of text fields on it. A webapp I regularly used was so slow (often freeze for 2-3 minutes when displaying a huge form) I thought the developer probably didn't care about performance at all (seem to be using react), but nope, turns out lastpass was the culprit. After disabling lastpass, the page with the huge form now loads in seconds instead of minutes. I wonder what lastpass do with the dom to cause this massive slowdown.
Anyway I decided to move to bitwarden last week and it works pretty great. No noticeable slowdown at all.