[dmitrygr]

It supports QSPI PSRAM natively. So it’ll be a lot faster than doing in manually on ATSAMD21

[mmoskal]

Also M33 vs M0 and higher clock - should be 2-3x faster. And maybe you can do something with the second core.

Im super impressed you got this to work! The memories of the SAMD clocks... Shudders.