Memory issues using longan labs can fd shield with pico 2?

I have a requirement where a relatively large xml file is to be continuously read after power on from the memory card reader paired with a pico 2. This file contains relevant can-fd signal instructions that will be passed to the longan labs ca-fd shield with the mcp2517fd chip.
Will this setup be a bottleneck in terms of memory handling or will I be requiring a mcc like the portenta to handle large memory transfers.

Depends on how the date is structured and being read,

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