The fix for the browser latency issues has been added to our latest version releases for Chrome and Edge - v6.2325. However, we are still waiting on Mozilla’s review, which is why Firefox is still on version 6.2321.
Here is the bug we filed with Mozilla https://bugzilla.mozilla.org/show_bug.cgi?id=1838448
Will update once we get more info.
i am quoting them from this reddit post:
https://www.reddit.com/r/Dashlane/comments/14jh4kv/dashlane_getting_slow_on_firefox/