Here's an article on how to turn the Mux Switch on and off.
How to toggle the MUX Switch in Armoury Crate
This discrete GPU mode was previously available as its own "MUX Switch" setting, but for our 2022 laptops, it's now integrated in to our existing suite of GPU Power Saving options. Open the Armoury Crate application, make sure it’s up to date, and look at the System Configuration box in the lower right-hand corner. You’ll see the GPU Mode option here, which lets you cycle through the four modes available to you. You can also head to the Device section, click System, and view the GPU Power Saving tab to see all four modes at once.
The options include:
Ultimate: This new discrete GPU mode uses the MUX Switch to give you the best possible latency and performance for competitive games. This will draw more power, so it won’t provide the best battery life of all of the options, and you will need to reboot for the changes to apply.
Standard (Windows default): In this mode, the MUX Switch toggles back to Microsoft’s standard power management, also known as MSHybrid. In this mode, Windows decides when to use the discrete GPU, disabling it during low-power tasks and routing GPU frames through the integrated graphics during gaming and other graphics-heavy tasks.
Eco mode: This option completely disables the dedicated graphics chip for maximum battery life with minimal heat and noise.
Optimized (Recommended): Customized by ROG, this mode will automatically switch into Eco Mode when on battery power, and Standard mode when plugged in.
If you're on a 2022 laptop, we recommend using Optimized in most cases, and switching to Ultimate when you need every single frame.
https://rog.asus.com/articles/rog-gaming-laptops/maximize-your-rog-laptops-performance-with-a-mux-switch/
https://www.asus.com/support/faq/1049569/
.png){kind=link}
.png){kind=link}