You don't have to buy a new computer to get Wi-Fi 7 speeds. There are external Wi-Fi dongles, such as the Asus RT-BE58 Go or Acer Wave D7, that you can plug into an available USB port to get Wi-Fi 7 ...
If your TV picture still isn't as sharp as it should be, even with HDR turned on, one of two HDMI settings might be to blame.