I recently tested one of my educational games on a DELL XPS 12 system with Windows 8 pro and a touch screen. The game ran perfectly except for a major problem with the click on objects. It would not register the first touch, but when you would touch again, this time on an different object, it would then register the click on the previous object! This is a big problem for my virtual musical instrument programs where the user would play on a virtual keyboard for example. I don't know if you can understand this problem just by reading it so I've included a link to my site with a virtual instrument.
Here is a link to a program called Meta-xylo+. It's a virtual Orff instrument and the user can play it either by using the number keys at the top of his keyboard or by clicking (or touching on a tablet) the keys on the screen. It's in french, but it's pretty self explanatory.
Here's the link : http://www.tomansuini.com/meacuteta-xyloplus.html
Another think I'd like to mention is that is I run the actual windows (exe) app, it works fine with the touch screen and there are no 1-touch delays. It only happens with the Flash version.
Thanks for any help, and if you like the Orff instrument, you can share it freely