On modern devices (pretty much anything that supports 5Ghz) it feels rock solid to me. I can forget I’m streaming. Even my old laptop from like 2013 gave me really good results. In my case I usually stream to something in the same room as that router, so ymmv.

I’ve tried the moonlight homebrew on my “New 3DS” though, which only has 2.4Ghz WiFi, and had less success, even with the ridiculously low resolution. I usually can play for a minute or two, but as soon as there’s one lag spike it’s like it can’t catch back up. I need to try it again though, a recent update may have helped, I just didn’t test it thoroughly. But that’s, like, pretty niche haha!