Does anyone know anything at all about a fix for Series X|S WiFi disconnection?

I have the same issue.

Controller and headset both disconnect or have some sort interference. Never had a problem on my Xbox One or Series S. But the problem is persistent on Series X.

Have tried all sorts of things like disabling all wifi and getting a new router. Nothing helps.

does the same on the original xbox one, xbox one s, xbox one x, xbox series x and s.

by design, nothing you can do.

think it even did it on the xbox 360's that had wifi too.

I keep having the same issue with the series x wifi just turns off and is unable to find any network at all. I have to restart the series x and it's good for about 5 to 10 minutes then does it all over again its very frustrating

Check the forum or just google "XBOX Series X disconnects from wifi". Tons of threads here and on reddit since the launch.

An example.

Have the issue on my series x under WiFi , all my other devices are fine but when I use the series x under 2.4gh it’s really bad lag and 5gh is better but still laggy, only solution that I found right now is to use Ethernet and completely disconnect WiFi. Hope this helps!