Slow ALT-Tab with TFC and Win10

[Bishop]

After a recent update to windows my alt-tab to and from TFC (especially to) went from instant to around 5 seconds.  This was really annoying as I do this often.  I found this solution and I thought I would share in case anyone else has the same problem.

In windows 10
Go to Settings > System > Focus Assist
Toggle the switch for "When I'm playing games" to off

[Guts]

I play in window mode, is that weird?

[DomiAvenger]

yes guts, ur weird 

[neonlight]

Turn off focus assist in windows settings, will fix it right away.