Sorry? I Can't Help You more?
I was - in wxact the same situation as You describe it?..? And went through every bit and piece I could think of -? Including looking at a lot of YouTube solutions to the problem?..? And At last, removed the "TICK" For "Let the computer Manage..."?.. And that exactly did it for me?! After sooo many hours used on this totally unacceptable problem which IS indeed Annoying?
Since then I've had no problems With WiFi "cutting off" After a while In My Windows 11 version? Dev. Preview updated to The latest Dev. build To get!?- just as You describe it?..
That was indeed the solution? For Me?.. As I wrote? - And Because Soo many things tried? I Can't Give You Any clue to what Else it could be?.. Sorry?!..
Try YouTube? - perhaps some of the suggestions They have - work for YOU?!..?
Kind Regards!! And Good luck in Your search for a solution!!
From:
Steff
Copenhagen
Denmark