view time

I would be interested in comparing this, because I have no benchmark. I make electronic music mixes ranging from 30 minutes up to 5 hours, my average view time started at 12 minutes, and has grown to 20 minutes. Not sure how to react to that, because I'd like to know what everyone else is...

Does my own views effect such things as watch time, etc...? I'm talking about the views by me wen I'm doing something to my video, editing settings, etc.. I clike on my video then click to edit settings, cards or whatever, but that view of mine that only lasts a few seconds or so, does it harm...

If someone is watching one of my videos then half way through the video they open up a new tab or window in their browser and my video is still playing in the background or minimized but they aren't actually watching it or able to see it.. Does YouTube count to point wen they open a new browser...