Slow Directory Opus due to many lock tabs. Why?

Can anyone explain why. The tabs are to folders in the ssd.

How many tabs are we talking about?

Does Task Manager show a lot of CPU or disk access? Is it dopus.exe doing it or something else?

Turning off this setting can improve performance with lots of tabs: Preferences / Folder Tabs / Options / Process file changes in background tabs.

This was a good fix. This was the current number of tabs I need to use.

Thank you for fast reply.