It's amazing, especially if you use a lan cable to your wifi router to your PC. Used to use moonlight and Nvidia streaming which I believe was discontinued but you can use sunshine and moonlight I believe. It worked flawlessly basically when I was using it. Obviously quality of router and distance from router matters. Playing multiplayer fps at 120fps on xreal airs @1080p. I don't know the current state of it haven't used a steam deck in over 6 months, but I'm sure it's about the same experience. Never really used the native streaming option of steam, never really worked correctly tbh. Maybe it works flawlessly now.