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Excessive CPU usage after upgrading to 102.3.1 (32-bit) on Windows 10

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Thunderbird automatically upgraded to version 102.3.1 (32-bit) this morning when my Windows 10 computer restarted after a Windows Update. Since then, Task Manager shows thunderbird.exe to be consistently using 5-10% of the CPU. If I go to offline mode, the usage goes to 0. This is new behavior after the upgrade. Any suggestions for fixing that would be appreciated.

Thunderbird automatically upgraded to version 102.3.1 (32-bit) this morning when my Windows 10 computer restarted after a Windows Update. Since then, Task Manager shows thunderbird.exe to be consistently using 5-10% of the CPU. If I go to offline mode, the usage goes to 0. This is new behavior after the upgrade. Any suggestions for fixing that would be appreciated.

Chosen solution

The problem seems to have resolved itself after a couple of hours; performance is back to normal again. I'm guessing it must have been doing some kind of start-up maintenance, like indexing my existing email database or some such. I don't know if that's normal with an upgrade or not, as I don't normally look at the task manager right after a Thunderbird upgrade; I just knew that it was different from the normal steady-state performance I had previously been seeing.

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Chosen Solution

The problem seems to have resolved itself after a couple of hours; performance is back to normal again. I'm guessing it must have been doing some kind of start-up maintenance, like indexing my existing email database or some such. I don't know if that's normal with an upgrade or not, as I don't normally look at the task manager right after a Thunderbird upgrade; I just knew that it was different from the normal steady-state performance I had previously been seeing.

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