One of the included micro SD cards is 64G (grade 10), thus it should be compatible with the DVR. It's set up and formatted, but after a minute of recording, the camera says it's having trouble keeping up and gives an error message about a recording buffer overflow. The problem persists even after the card has been formatted. Kingston (Canvas Select line) was the most suitable option for me in terms of price and performance among the options available on our market. The manufacturer also provides a lifetime warranty, albeit this does not apply to us just yet. Nonetheless, this was also a factor in the decision. Therefore, while everything operates like a well-oiled machine.
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