Screen tearing occurs any time you do not have V-sync on and the higher your FPS, the more tears you'll see. Assuming a 60hz monitor, at 150 FPS, you'll have 2.5 tears at any given time.
Even when your FPS are low, you'll have tearing if V-sync is not on (or G-sync/Freesync).
You might want to video your problem. It is possible your HDMI cable/port is bad, or even the monitor. Of course those problems aren't call tearing.