PicoCalc SD card max size and formating?

What is the max size of card the PicoCalc will take successfully ?, I have a spare 256Gb and would prefer using that to buying another. The above official Wiki example seems to be using a 64Gb card.

Anyone tested SD card speeds with Pico and Pico2 etc ?

Formatting seems a little messy and I dont have linux available. It seems there’s a need for a one-click Windows app just for this purpose unless one already exists ?.

You can use any size card ≥ 32 GB you want but only the first 32 Gb will be used, according to the format routine you cite.