consideration: overclocking for faster sampling?

[hanetzer]

One can overclock the rp2040 sysclk to some fairly high numbers.
given that the pio runs at the sysclk rate, one could hypothetically get a much faster sampling rate.

[dotcypress]

Yes, this is possible, I tried 250 MHz and everything works fine.
I need to do more tests on that and probably I will create an overlocked build