I'd like to revert to the standard Windows 10 alt+tab view if possible (with windows in the menu being their proportional size), but can't find a way to disable DF's handler.

I am also wondering the same thing. I'd like Alt-Tab to toggle between the two most recently used windows, NOT show all windows on all monitors. How do I set Alt+Tab to toggle between the current window and last used window? Thanks!

Nevermind I figured it out. Thanks!

I just disabled the Alt+Tab handling by DisplayFusion and this fixed a major problem for me. Prior to this, Alt+Tab was incredibly slow on my system. So much so that I found an alternate utility to handle app switching. But now I can use the Alt+Tab functionality that's built into Windows.