Doesn’t that impact your view of the screen?

Depends on the sensitivity you configure, usually you only tilt a few degress. I do prefer it on a Dualsense controller though with no display attached to the controller.

Do you use it in hectic situations - like doom etc? Or is it better for sniping and stuff where you have time to aim?

Usually for instances where I have time to aim. I have seen quite a few people who are really good with the trackpad though. I’m more of a mouse or gyro control guy though.