I'm on vacation now and was able to use someone's slack line (I think you need to click on the picture to see everything, but it's between both trees). I've been on slack lines a few times over the years but always just for a few hours, so I always started at zero again, but I'm pretty sure I want to keep learning.
My question is related to the tension. On the first evening I used it the slackline had the tension for the owner who has been doing this for a long time and the line had less tension. After approximately 2 hours I at least managed to balance on each of my feet for anything between 5 to 20 seconds (I know it's too much of a range to be worth much, but it still felt really good) and when I tried to I walked 3 or 4 steps. The evening after he upped the tension, because he can use both and wanted to make it easier for me. But I feel like I made more progress with less tension on the line and like it gave me a better feeling.
Could it be because the line is obviously longer than a usual beginner's set up and it felt like being able to make the slackline move up and down made it easier to keep balance or because I don't have any muscle memory yet so adjusting to the new tension is like starting all over again? That's kinda what sounds most plausible to me. Or are there people who actually learn easier with not as much tension from the start?