Microsoft Recently demonstrated a high performance touchscreen prototype, that would reduce the touch lag of a device from 100ms to 1ms. Microsoft has filed a patent protecting its endless research on the subject. 

The Effect of touch response lag once reduced will bring the experience of touchscreen devices to a brilliant level. Instead of a laying line , users if drawing on a touch screen tablet, will experience almost no lag as if the ink was coming from the finger. 

Micrososft may throw these screens into future Microsoft Tablets, if they do, expect them to be superiorly responsive.