My brand new Viewsonic vx2758-2kp-mhd always does this annoying horizontal flicker/screen tear during games even with vsync on, it only seems to happen when i play games in 1440p and not in 1080p, it also happens a lot more with freesync enabled and when disabled it still happens but is much more rare. Ive tried replacing dp cables and that did nothing, someone also told me to try out hdmi 2.0 but id rather not spend anymore money on things that wont work.