Hello jasonleeabell,
May I know more detailed information about you "letting things idle"?
You were connecting to Wifi, any other external device?
Was there any other program on ? I just saw Chrome, Discord and Armoury Crate
maybe not essential, but if you can provide task manager screenshot, would be helpful.
and what is the screen lightness?
Also, the 3 hour thing, is it the estimate time of using , or you let it idle for 3 hours till the power used up?
Please update the Nvidia driver and let us know if it get better.
https://www.asus.com/Laptops/ROG-Zephyrus-G14/HelpDesk_Download/Thank you.