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Thunderbird is horribly slow on my laptop, running Windows 10 and Avast antivirus. Slow to key new messages, slow to load messages, slow to delete messages.

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  • Poslednja wotmołwa wot christ1

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When keying, response is painfully slow, several seconds, and I'm not the fastest typist! \

When keying, response is painfully slow, several seconds, and I'm not the fastest typist! \

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What is your anti-virus software?

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christ1 said

What is your anti-virus software?

Avast

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Avast is known to cause problems for Thunderbird. See https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues#AVAST

Also make sure to create an exception in Avast for the Thunderbird profile folder. http://kb.mozillazine.org/Profile_folder_-_Thunderbird