My native is 1920x1080 and I wanted to ask what the adversary most stretched and where my aim should be best? 1280x1080 VS 1920x1080
I would play 1280x960.
X960 is nonsense because the graphic just gets worse.
As close as possible to 1: 1.
If you can set the FOV, you should leave your resolution to native.
Why do you ask then?