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Since installing Supernova, I find a huge (multiple minute) delay whenever I open a folder to a new tab or window. There was zero delay on the prior version to open a folder, so it appears to be specific to Supernova. I'm surprised that no one else has mentioned it on the forums yet, so it seems it might just be something about my particular setup. Can anyone help me diagnose what I might be doing wrong?

Thanks!

It appears that Thunderbird Supernova version 115.3.3 (Windows 11) has a bug or compatibility issue with large profile file and/or Storage Management - Intel Optane Memory.

Since I installed that new version, Thunderbird has been slow and stops running frequently.

On latest version 115.3.1 (64 bit) when I click on GET MESSAGES nothing seems to happen for several minutes than after repeated clicks on same suddenly line at bottom shows downloading some number of messages. Is this something I am doing to slow what used to be very speedy process to download messages from Comcast server to my PC?

When I opened Tbird app today, my messages show in various folders but only a list of messages, not a screen to view contents of message being examined. I did not do anything I am aware of to change this and haven't been able to locate setting to turn on the message content view again. Also on list of messages, they are shown but with a much wider spacing (double space?) with lot of wasted blank space. How to correct this?

Since the UI upgrade, my Thunderbird client has become slow on my PC. On opening instead of what was previously a quick start-up to my INBOX, it now hangs and you can see (from bottom left) its polling out to email servers and waiting for a response .... much slower than previously.

It's not a server response as I use same email on my iPad and that logs in with almost zero delay.

Occasionally also lags behind key board, you are typing and you are several characters or even words in front of the client.

Is there any rebuild or similar I should do now I am on the 'new look'

I would reinstall Thunderbird to see if that fixed the problem. However, I am afraid of loosing data.

The installation has 3 email accounts and two of them are not allowing a logon and one is missing its control block.

Latest Thunderbird update 115.5.2 on my Windows 11 laptop has completely slowed the computer down and keeps opening the 'Help Keep Thunderbird Alive' webpage when I launch Firefox.