Screen dying already?

[MtnSk8]

This could be easily caused by the heat generated by the A64 SoC.  Based on the photos in this thread, the defects seem to be appearing at the upper half of the screen, and the A64 SoC is underneath that part of the screen.  Based on my experience, the upper third of the screen gets particularly hot.

As a preventative measure, I'd suggest that everybody enables thermal throttling of the A64 SoC on their PinePhones.

This is the best explanation so far. My Pine Pocket Heater was super nice this winter but as summer approaches I'll be interested in "enabling thermal throttling".
How do I do that?

Thanks!