Been having chair-related back troubles. I got one from amazon that just wasn't working for me, a mesh type one with lumbar support that felt like having someone's foot in your back. It was torture. So I after a month of trying every adjustment I could I gave in and sent it back. And after spending hours looking at some of the worst gaming-related content that YouTube has to offer I ordered one of these:
Then I looked at some more reviews and decided that I had definitely made a horrible mistake. Some really weird review thing going on with a mixture of seemingly fake positive and fake negative ones. I think some of these firms are at each other. So trying to choose a chair when you can't test them is an actual nightmare.
But I have to say that this chair feels exactly as I'd hoped so far. It's so nice to get up after a couple of hours without feeling like I've narrowly survived a plane crash. I think I just can't get on with too much lumbar support.