I have the exact same problems that you guys are having!!!!
I have the SanDisk ultra 64gb class 10 uhs1 and recording to it stutters and jerks. But when I record to my phones memory, the stuttering is gone. I am waiting for a replacement SanDisk card thinking it is an issue with the,card. Now, on Nokia's forum, some guy told me a class 6 card is good enough. I suspect something has to do with the write speed to the SD card but class 10/uhs-1 card writes10mbs or higher so it should be enough for 1080p recording though.
So should upgrade to the next level up card?(extreme/extreme plus)?
I have the SanDisk ultra 64gb class 10 uhs1 and recording to it stutters and jerks. But when I record to my phones memory, the stuttering is gone. I am waiting for a replacement SanDisk card thinking it is an issue with the,card. Now, on Nokia's forum, some guy told me a class 6 card is good enough. I suspect something has to do with the write speed to the SD card but class 10/uhs-1 card writes10mbs or higher so it should be enough for 1080p recording though.
So should upgrade to the next level up card?(extreme/extreme plus)?