Mon May 13, 2019 7:11 am
Hey - I do know the reason for this. I had a lot of back and forth with the fine folks at BMD about this a few months back (I even sent over an SD card for testing).
I was having lots of dropped frame issues with the 128GB cards that you mentioned - Specifically SanDisk. At this point, they were on the recommended list.
Then after an investigation by the BMD team, we found that certain 128 cards were not working properly.
I've been successfully using the 64GB version of the same card with no issues so it appeared to be a specific issue that SanDisk implemented in their 128GB cards.
So with all that said - I would avoid the 128GB cards until some sort of fix is posted (if that ever even happens). Others may have successfully used those cards - and maybe they will work just fine for you too. But in my experience, there were lots of dropped frames over time which meant for unusable portions of my recordings.
John Barker
heretorecord.com