Hi nasher02 ,
Your network card supports Wi-Fi6E (Ultra High Band) standard while the other laptop's network card is different and only supports Wi-Fi6 standard.
So the 2 network cards are different and run a different network protocol. But have you already tried to set Prefferd Band to 6GHz band? Is the result the same when you enable mobile hotspot?
Can your PC connect to your router's 5 GHz Wi-Fi network and access the internet? What is the Wi-Fi standard of your router?
Try setting Preffered Band to No Preference and in the mobile hotspot settings, set the band to Any available.
If the problem persists, try temporarily disabling Bluetooth in Device Manager.