I haven't done anything new recently (no new add-ons, no changes of any kind...) but all of a sudden Thunderbird is extremely slow. Clicking from one folder to the next takes a few seconds, clicking from one email to the next takes a few seconds... I've compacted all folders, repaired all folders, made sure I'm up to date (115.8.0 (64-bit)), so I'm not sure what else to do. The folders I'm working in are all 1 GB or less. I have 2 active extensions; remove duplicate messages and smart templates. Disabling them did not help. What I did notice, and I assume this is part of the problem, but can't be certain, is that after doing a repair on my inbox, dozens of emails suddenly appeared in the inbox (that had previously been filtered and moved to other folders). Things did speed up for a little while, but then slowed down again. Repairing inbox again caused filtered messages to appear in the inbox. In other words, I've been working as normal, messages have been filtering to the appropriate folders as they come in (never showing the inbox just going right to the subfolder), but suddenly these messages (after repairing my main inbox) are now appearing in my inbox, at the time they originally came in (they are still in the subfolders as well). Any thoughts as to what's going on here? Thank you.