Don't fuck around with hidden UEFI settings unless you have a proper external flasher to fix it. I just bricked my main work laptop because I was messing with memory speeds and didn't realize it's stored in nonvolatile flash. Since memory training happens and fails before I can access the menu and fails, I can't reset it. I did get 5200 MT/s up from 4800 stable doe, but 5300 did noting and 5600 bricked it. The chips are rated for 6400 but the memory controller of my CPU is only rated for 5200. Once my chinkshit CH341A comes in, I'll update you on other things I try. I'm planning on neutering the ME and overclocking the iGPU. Hopefully I can just enable being able to do it in userspace