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Hopefully that provides an insight into why 'U3 A2 UHS-I' is the ideal card you should be looking for with the deck. I would always recommend when you purchase a new card that you run 'Kdiskmark' in desktop mode by downloading it from here: https://github.com/JonMagon/KDiskMark/releases Check the latest release and download the file ending in 'appimage'. From here open the folder it downloaded to, (don't open it from Firefox as it won't know what to do with the file) double click the file and should open the Kdiskmark window. From here you can select your MicroSD card and do a speed test to make sure you are hitting the advertised speeds!
Some early A2 cards were implemented poorly and actually had worse IOPS than A1 cards, as they used a worse onboard controller in the hopes of the system making up for the deficiency. See here. Reputable large A2 cards no longer have this issue but it's still a minefield.