[Bug 1959747]

[Vseerror-i]

Frank ... comment 62 may render my comment 69 null and void, if the
comment 56 regression range is in fact accurate.  And I am skeptical of
that [mozilla-central regression range 2021-01-27 to
2021-01-28](https://hg.mozilla.org/mozilla-
central/pushloghtml?startdate=2023-01-27+06%3A00%3A00&enddate=2023-01-28+08%3A00%3A00).
But you might try nightly builds in that date range.

You could copy your production profile that you are using for beta to a
new profile for nightly builds, to leave your beta profile unaffected by
testing.

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https://bugs.launchpad.net/bugs/1959747

Title:
  [upstream] Very high CPU and slow responsiveness in Thunderbird 91-102

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