1+ second lag when I switch the focused window between monitors

[knoa]

I found that the delay happens when both the DisplayLink manager and BetterTouchTool are running.

If I quit one of them, the delay disappears.

The delay happens even if the BetterTouchTool has no settings right after installation, as well as selecting the [Disable BetterTouchTool For All Apps] option.

But the delay doesn't happen on the Test user account on my Mac.
So... it might be a complicated situation only for me.