One of the changes that has occurred is that each delete is not handled as a discrete delete instead of multiples in a single transaction. The older way was faster, but errors were not reported so when implied deletes for things like a move (copy and delete) failure would manifest as email reappearing in the original location sometimes with a duplicate in the new location, sometime not.

That should not make things excruciatingly slow, but if your internet connection is close to saturation (as many home networks are) then there could by noticeable impacts. You might also want to consider things like antivirus programs that tend to slow everything down by holding up actions while they do their glacially slow scanning functions.

Thanks for the reply and input. Network isn't the issue. I'm not even close to any kind of saturation point. I tried with anti virus turned off. ( Windows Defender) Turned off all windows security just to test for change. Nope and Nadda. Still slow. I suspect it was the last update 115.4.2 Thunderbird. It was only a week or so back and that is about when my issue started. Thanks again for your input.