Windows 10: Wireless connection from Desktop to Samsung QN90C

I'm trying to connect to Samsung QN90C 43" from my Desktop using the TPLINK AX3000 TX50e Wifi 6 Pci Express Adapter using Miracast, but always get the error message "The connection request from <MY PC> was not successful. You can try reconnecting using your moible device."I have the most recent drivers, tried to remove the TV from devices and add again, also plugged off/on from power and no success.The router is also Wifi 6 and is currently less than 1 meter away from both PC and TV.How can I solve that?

:)

 

Connect a desktop pc to a Samsung smart tv

I'm trying to connect a older Desktop pc with Window 10 to my Samsung f8000 smart tv via wifi or LAN. My desktop pc is ethernet cabled to the Sky home hub and the smart tv ethernet cabled to the hub as well. My smart tv appears in the connected devices
list but it doesn't seem to connecting, is it because I need a wireless dongle??

 

Can't wirelessly connect to Samsung TV

If that is the case, we need to clarify a few things first for us to better understand your concern about connecting your computer to your TV using wireless connection. Kindly answer the following:

• Does your TV has a Miracast feature?
• You mentioned that you're able to project your computer to your TV using wireless connection before. Can you please tell us the step-by-step process on how you connected your computer to your TV using wireless connection.

While we wait for the answers to our questions, there may be a setting on your TV that needs to be activated so that you can connect your computer. We strongly recommend contacting Samsung so that you can verify how you can connect your computer to your
TV wirelessly.

We'll be waiting for your response.

 

Samsung focus not using Wireless-N?

So, I know the Samsung focus is supposed to have Wireless-N, but it is not connecting to my router at Wireless-N speeds (makes my whole network come down to 54Mbps) and will not connect at all when I force Wireless-N speed across the whole network.
Is there a setting I'm missing somewhere?