He’s right about the new gamepad UI for steam though… it’s completely unusable in Linux from my experience (the old big picture UI worked fine)
I don’t know why you’re having that issue, but I have three systems with Nvidia cards (1080ti, 2060 laptop, 1660 laptop) that I use Steam on and the new big picture mode is entirely usable. It’s not perfect, and does hiccup someone’s, but it works fine.
I’m guessing the laptops are using Optimus and are maybe running big picture using the integrated graphics, hence being smoother on them. 1080ti I don’t know, maybe it’s just in issue with RTX cards or something. iirc it was to do with HW acceleration but not sure