I've done this several times over the last 18 years or so. The most recent was a few months a go. And my steamdeck persuaded me. Unfortunately I ran into the same WiFi networking issue I've never managed to resolve. Even on different hardware. Pings to my default gateway are ridiculously slow compared to windows. I spent countless hours trying to resolve. I gave up and have gone with windows 11 ltsc.

This is the type of thing that AI is actually good at diagnosing in my experience. Haven't had anything similar happen but seems more of a router issue upstream.

Maybe worth checking what Steam Deck's connection has configured differently given it's on the same network?

What is the constant? You have something that is unusual and that has not changed for 18 years. Is it specific to your home network?

I have not had any issues I can remember with Linux wifi for as long as I have used wifi.

Interesting; I haven't had wi-fi issues in Linux for more than a decade, but admittedly I sort of selection-bias towards laptops that are known to work fine with Linux.

You can mess around or go buy a $10 gbit USB dongle that you know works like a tplink.

Like what sort of response times for each?