Rated 3 out of 5 stars
Great idea and I love the layout. Unfortunately, causes Thunderbird to freeze up a ton when viewing larger threads. Had to disable it.This review is for a previous version of the add-on (3.1.19).
If you want to submit a performance profile, then we would be happy to look at it and see what can be done to improve.
There is instructions on how to do this here: https://github.com/thunderbird-conversations/thunderbird-conversations/wiki/Profiling-Conversation's-Performance
Please file an issue here: https://github.com/thunderbird-conversations/thunderbird-conversations/issues