If you're having an inaccurate response using touch, use these steps to re-calibrate the device:
Under "Tablet PC Settings," click the Calibrate the screen for pen or touch input link.
Under "Display options," select the display (if applicable).
Quick Tip: Under "Details," you can tell whether your screen has full support for pen and touch with Windows 10.
Click the Calibrate button.
Select the Touch input option.
In the white screen, tap the crosshair each time that is appears on the screen, and do not change the resolution during this process.
Once you've completed the steps, your touch-enabled device should more accurately register touch inputs.
It's worth noting that using the same calibration tool, you can calibrate the pen input with Surface or another device that includes stylus support.
Click HERE for the video from Christy Brock