I have similar issue with same laptop, same card, but Win10. Here it is more mindwrecking the case, every day at some selective hours :28 the card just gets enough, and will restart the NIC. Building up network connection, establishing 2.4Ghz, then steering to 5.0. Not every day same hours, kinda random. Now this is the better status what I had before. I following here a topic: https://rog.asus.com/forum/showthread.php?124328-DRIVERS-MediaTek-WiFi-Bluetooth
The latest release makes such difference that my disruption goes only 10-120 sec per case, and not 200-600 sec...but ultimately the card goes down, resets, boots and start from scratch. Imagine playing MMO or co-op.
So yeah, currently using v3.3.x, and its the best so far, but still below acceptable experience. Now, if oyu want to find driver supplied by Asus and download from webpage, it is only v3.0.x.
For a suggestion, either bear with us following the drivers, or take a deep breath, void warranty and replace the wifi card. I would think in 2022 this should be laughable situation. Turns out it is our reality.
With best heart.