Jittery, shaking or vibrating screen

Hello all,

I have a new XPS 12 9Q33 and apart from the 'normal' issues I have experienced with the Intel Rapid Start I have this other problem. Occasionally the screen starts shaking. It happens in spurts, as in it's not happening now, but once it starts it will continue for a little while and then stop. It's not disabling jitter but it's annoying. 

Has anyone else experienced this or able to provide some advice. I'd like to get this solved soon in case I have to send it back!

Many thanks,

Matt