Hi there! In tinkering with my GPD Win Mini 7840U/32GB/1TB recently, I found the AMD Pluton settings in the BIOS.
Now that I’ve reset the BIOS and am back to a known stable state, I’m backing up my steam games before doing further testing, so I don’t recall the exact path to the Pluton settings. That said, I recommend against changing any settings related to AMD PSP or Pluton on the Zen 4 boards it seems. Even if disabling it gives you privacy peace of mind, you’ll have to get a tiny paperclip or something to hit the reset button for 3 seconds while the device powers on to get it to boot afterwards…
So yeah, apparently don’t mess with the Pluton settings or your handheld won’t properly boot.