How can I switch the MUX switch on the Galaxy Book4 Ultra?

I found out that even if I connect an external monitor to the HDMI port on my laptop or use a USB-C to DisplayPort adapter, the signal still goes through the integrated graphics. I want to maximize my gaming performance. So, I looked up whether there is a MUX switch and found a website, Full List of Laptops with MUX Switch – NanoReview, which lists the Samsung Galaxy Book 4 Ultra as having a MUX switch. However, I couldn’t find any options for it in the BIOS or software. Am I missing something?