It seems the tap/click delay is back in the 1.0.0-beta.1 and nightly.
Here is a simple codepen: http://cdpn.io/aIEJD
If you click the button fast you can see the issue. I have verified this exists on an Ipad Air too.
We are build a stocktake app and need data entry to be fast and responsive.
I don’t remember the version number, but the tap response was the main reason I feel in love with Ionic. It was as fast as our native app in that regard…but not anymore I really hope for a fix.