I'm happy-ish second day owner of Zephyrus M and apart from speaker issue I'm gonna elaborate on further below and Aura stuff I'm happy with it.
The only problem are the speakers. Left speaker works perfectly, the right one does as well until (what I figured out so far) the device heats up a bit and starts cooling more intensely, once it does the right speaker volume starts to fluctuate and ends up on very low volume and occasionally goes back up to full stereo to match the left one and then ultimately lands on low until next reboot.
Drivers are not the problem, I've already reinstalled Realtek several times. Countless reboots later and I ran out of ideas.