mon, did you get the SD card from a reputable seller? Some 3rd party Amazon and eBay sellers sell counterfeit/fake SanDisk (and other manufacturers) memory devices. These sometimes perform poorly or not at all. My inclination is to believe the 32gb card you have should work if it’s a genuine SanDisk card. While I don’t have an Aeros, I have never had a problem with any SanDisk product I’ve bought. I think and I may be incorrect that 32gb may be the largest size the Aeros (or BeatBuddy) can fully use if the file system in the Aeros is based on FAT32.
There are utilities that can benchmark and test memory media. Two I use for Windows are ‘Flash Drive Tester’ and ‘FlashBench’
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