Using fast sync and also have a 144hz monitor with gsync powered by a 1070,the card and nividia are new to me as is 144hz and gsync so I might not be the best to judge.
I've been running doom with gsync and free sync and when my frames go above the 144hz (I've seen 200fps ) there is no stuttering or tearing for me it seems to be working as it should ,keeping things smooth and fast without tears or stutter.
I've been running doom with gsync and free sync and when my frames go above the 144hz (I've seen 200fps ) there is no stuttering or tearing for me it seems to be working as it should ,keeping things smooth and fast without tears or stutter.