Thunderbird extremely slow and not responding. (win10)
It has taken over an hour to download 400 emails, it usually takes less than a minute. I have turned off firewall and unistalled/reinstalled Thunderbird which did not help. Also, "not responding" all of the time. This has been going on for the last couple of updates starting around V102.
Modified
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Please include your OS and full Thunderbird version when posting for support.
For performance issues, please step through https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems