Don't have a screenshot of it right now, but in ALL my games I have a single screen tear, roughly 3/4 of the way down the screen, completely horizontal. Very distracting.
BenQ XL2730z (2560x1440, 144hz) connected to a Gigabyte R9 390 with a display port cable.
I'm on Windows 10 64bit and the monitor is set to 100Hz in the advanced tab of display adapter devices.
Here's a video of the issue, again, this happens in pretty anything I play.
To help narrow it down - when I played Xcom2 on my Tv the other day via a HDMI cable at 1080p there was no tearing, suggesting it's likely something to do with either the screen/cable or with the card's output using that equipment.
Not sure how or why this occurs, any help or suggestions would be much appreciated. I'll grab a screenshot of it when I get home.