A mux switch allows the laptop to switch between integrated and discrete GPU, allowing both direct access to the display and eliminating the passthrough. So if a game ran at a theoretical solid 90fps with a mux switch, it might run at 85 fps without one.

What is a mux switch on a laptop?

A MUX switch lets you disable the integrated graphics in your gaming laptop, giving you a performance increase in games at the expense of worse battery life.

What is a mux switch Reddit?

Mux switch disables the iGPU inside your CPU. This reduces battery life because you are always using the powerfull dGPU instead of iGPU. However this switch improves FPS massively in CPU heavy games like CSGO. 3.