GL-B1300: Chromecast Ultra doesnt detect 5G network

(tested with 2 different chromecast ultra)

The 2.4G network is detected ok, but 5G is not detected by the Chromecast

But I have managed to make it work with a little trick:

  • Disable 5G network
  • Change the name of the 2.4G network to be the same as the 5G network
  • Configure Chromecast Ultra using that 2.4G network
  • Change back 2.4G network name to the original and activate 5G
  • Now Chromecast connect to the 5G network!

This happens with firmware 3.027 and also 3.104 (current testing)

Any idea what could be happening?