On the Scar 15 2021, the signal is routed through the Vega iGPU with Optimus, and as explained in our follow-up Scar 17 article, that takes a toll on the gaming performance in some titles, such as SOTTR, and especially in fast-paced eSports titles. The only way to circumvent this aspect is to play games on an external monitor connected via the USB-C port (though DP), and not through HDMI, as that’s also hooked into the iGPU.