Got the same problem, Predator x34 and with a MSI 980. Did not happen when I used an old HP monitor with DP. Running creators update and latest Nvidia drivers.
The fact that it's made of high quality plastic, easy repairable and replaceable back cover is a big +. Although i never owned a LG phone since the not so great? Optimus X2 i would love to give this a try!
Regards from Sweden!