Hello everyone, I have the same problem as Fadis, same samsung 128gb, exfat. On my PC it gives very good read/write speeds but on EOSM it's very unstable and typically gives about 25mb/s.
BUT, if I reformat this card in camera then I get stable max possible speed for EOSM. What's the reason for this to happen? Why formatting helps, but after some short time card starts underperforming? Even tho on PC speeds are stable all time.
This is my old post https://www.magiclantern.fm/forum/index.php?topic=9741.msg211051#msg211051
BUT, if I reformat this card in camera then I get stable max possible speed for EOSM. What's the reason for this to happen? Why formatting helps, but after some short time card starts underperforming? Even tho on PC speeds are stable all time.
This is my old post https://www.magiclantern.fm/forum/index.php?topic=9741.msg211051#msg211051