I actually do not love the seats in our Model 3 Performance either, but for different reasons. I find the bolstering to be too soft and too shallow, and think that it doesn't hold me in as much as I would like for such a high performing car. I still own a 3 year old GTI, and think those seats -- while they have far less adjustability -- are far superior. It just feels like a sports car with the firm, bolstering and deep seat well. The M3P in comparison feels like a family sedan in this regard. When I'm taking turns aggressively, I feel like I'm sloshing all over the place, quite unlike the GTI.
In the M3P I also have a _huge_ problem with the fact that you can't adjust the amount that your head is pushed forward by the headrest. I feel like there's probably an industry term for that like "neck thrust" or something (lol), but I think that it feels a little like my head is being pushed forward too hard in relation to where my upper back is. It hasn't been a huge issue on longer drives, but just something I wish I could dial back a smidge.
Thanks for coming to my TED talk.