Mar Twain "Sam"
I have tried different SD cards in a Grpro Hero3 black edition, as it can record from 4k downwards none of my other cards had been able to use the full range, the recording stops after few seconds.This card make me record 4k, 2.7k, 1080 etc. different fps until the card is full or battery runs empty.Maybe i'm lucky, lots people said sandisk always giving them freezing and problems but i still go for it and i never had any problem.