Same problem here.
With internal wifi or USB key (I thought it was the Netgear 6210 key the trouble but trouble with internal wifi too).
I use a Xiaomi 4a rooter that get the wifi and give it to the pi with RJ45. No problem like that.
Hoping a fix one day...

Hello. I have the same trouble. Soooo difficult to get something displayed on my Samsung 4K TV. I never had trouble with other electronic devices using the same cables I use with the Pi 4 (4 Gb). TYhere is really a piece of harware or software that need to be corrected. I really ask mysleft what I c...