I'm seeing very poor R/W speeds from my card. It supposed to be a class 10, 64GB
In the Benchmark tool, it gets detected as the Internal SD card for some reason. But regardless, this card should be performing faster, IMHO.
5MB/s read and 4 MB/s write seems very slow. In fact, if I set my pictures to save to the SD card, it gives me a warning that my SD card is too slow.
I just tried formatting via the phone menu (Settings > Storage > Format SD Card), but still pretty slow.
Any thoughts on how to speed it up? Did I purchase a bum card?