I'm having issues with my works VPN connection as well as an Xbox series X DNS not being able to resolve xbox server names.
I'm running a Hub 3 in modem mode, with an tp-link Archer AX10 as my router.
My work uses a Cato Networks VPN and while I'm able to connect, the connection is unusable slow, and trying to do anything like remote desktop will cause the connection to drop all together.
When it comes to the Xbox, it will take several attempts to connect, with it failing because of DNS each time. I do also have some issues with wireless devices in general losing connection, but I've not reliably managed to record which devices and when.
I thought I had solved this issue a few months ago after changing the router to use the Google public DNS. Since making that change I've not had a problem. However I had to replace the router (same model) over the weekend as the original was damaged, and after putting the settings back to what I remember them being, the issues have returned.