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thunderbird on windows 11

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After downloading an email from my gmail account thunderbird uses 90% of ram and is essentially frozen. Initially after starting Thunderbird is not responding followed by a slow increase in ram usage to about 90% is ibserved. Tried uninstall and install; but not change in behaviour. Any suggestions of how to repair would be welcome.

Thank You,

After downloading an email from my gmail account thunderbird uses 90% of ram and is essentially frozen. Initially after starting Thunderbird is not responding followed by a slow increase in ram usage to about 90% is ibserved. Tried uninstall and install; but not change in behaviour. Any suggestions of how to repair would be welcome. Thank You,

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The version is 115.0.1