Anyone expriencing a second+ delay once you click on the home button once you're any app, until it finally comes back to the home screen?
Nope, but your device is facing re-indexing of a lot of things since the new install.... Give it a bit of time and report back.
You can also change the setting to reset finger to open in Accessibility.
It's not really noticeable on my 6s, but on my iPad Mini 2, oh boy...
Settings > General > Accessibility > turn off Accessibility Shortcut = No lag when you press the home button. You're welcome
Your solution was the closest one to how I handled and ultimately resolved it on my iPhone.
Settings -> General -> Accessibility -> turn off Easy Access.
Worked for me just fine - adios, home button lag!
I guess most people are having problems with it because Easy Access is enabled by default (or at least that's the case with my phone).
Oops, sorry, my bad. It's called "Reachability". Anyway, disable it and you should be fine.