I just bought two 128 GB 1000x Komputer Bay cards in order to have fast cards for RAW video. I'm having issues with both of them, which leads me to believe that, even though online it says they are perfectly good, that these are bad cards. They were way cheaper than anyone else and I may be realizing why 
Using the same files on the cards, my 16GB SanDisk card worked fine, except it was too slow for the RAW video. With the 128GB 1000x Komputer bay cards, one of them worked to install the ML software, but I would receive an error for loading the RAW video module. The second Komputer bay card fails to find the update file and tells me to please check memory card and reload the batter and try again.
Should I just send them back and get higher quality cards?
Thanks in advance.
Using the same files on the cards, my 16GB SanDisk card worked fine, except it was too slow for the RAW video. With the 128GB 1000x Komputer bay cards, one of them worked to install the ML software, but I would receive an error for loading the RAW video module. The second Komputer bay card fails to find the update file and tells me to please check memory card and reload the batter and try again.
Should I just send them back and get higher quality cards?
Thanks in advance.