I enabled alt tab on all monitors, the issue I have with it is that it's a bit slow, like it can take a second or so to appear, the first time you press it. Once it has appeared once, releasing it and pressing it again is instant. After 10-20 seconds or so though, it's back to being slow again.

I guess it might be loading the images or something and not caching them for very long. Do you think there's a way to speed it up?