Help: Dell G3 did not see 5Ghz wifi network from Asus RT-AC3100 running Merlin

Situation:

- Laptop: Dell G3 3579 with Intel Wireless AC 9462 on Windows 10 (latest update)
https://www.dell.com/gh/p/g-series-15-3579-laptop/pd

- Router: RT-AC3100 running Merlin 384.8_alpha1-g9ac9c80d7, channel #149 (5GHz) & #6 (2.4GHz).

G3 laptop only sees the 2.4GHz broadcasts from the AC3100 but not the 5Ghz from the AC3100. Other devices in the house (HP laptops, Phones, iPad and Android tablets) don't have this problem.

Funny thing is that the G3 can connect easily to...

Help: Dell G3 did not see 5Ghz wifi network from Asus RT-AC3100 running Merlin