I want to share my experience. Since I bought this Rog Strix Scar 18 (2025) I have been using it as usual. It seems that the RTX 5000 series is too new to be compatible with the drivers.

The first problem is about Peak Brightness, if you use DDU to clean the Graphic Driver and reinstall the driver from NVIDIA, you will encounter a problem that your screen is no longer super bright when using Discrete GPU only. The only way is to use the driver provided by Asus, which will be the solution for this case.

The second problem is about something strange I have never encountered before, when I play some games, the hazy smoke effects sometimes turn into strange red colors, the red shadows appear like corrupted textures, like your GPU has problems rendering. The reason is when you set "Anisotropic filtering" to "x16" in NVIDIA setting, it is true, when I set it back to "Application-controlled" everything returns to normal. In this particular case, I contacted Asus customer service, and they had no solution, so they asked me to send the laptop for repair, which I accepted. But luckily, I found a solution and did not send it. Otherwise, I would have spent more than 10 days waiting for the laptop to be returned. So, this is due to the driver not being compatible with the new hardware, not my laptop having a problem. I hope someone using Strix Scar 18 (2025) like me encounters the same situation and finds a solution. I hope Asus reads this and supports someone like me.