So BotW can play pretty well on Steam Deck now, TOTK on the other hand… it’s a mixed bag. Requires a lot of tweaking and even then you’ll see dips into the 20s for FPS and the occasional stutter. It’s playable, just not smooth. That said, the OG switch only performs just marginally better with the OLED Switch being the best of the three.
This is also coming from someone who has done a lot of tweaking for ToTK to make it work to a satisfactory level. There may have been some further developments in the past couple months, I haven’t tried since the start of the year