Arhhhhh – yep that’s how I’m feeling about this. The video contains all the details of what went on with this card and what I’ve tried but he upshot is that I’ve returned the card as ‘not fit for purpose’ 😢 I really wanted this to work but hey ho, not everything works well together.
I think the problem (yet to be confirmed) is the fact that when you delete some files it fragments the card and for whatever reason Sony hasn’t been very clever in their chip design and it causes slowness whilst it finds places to write data. I don’t notice this on other cameras because they take advantage of the second row of chips (UHS-II) which makes it have a faster read/write speed. This might be fixed for the G series rather than the M series but the price difference at the moment is more than double!
I’ve really put this out there for you at the moment so that you don’t make the same mistake as me with buying these two items together and wasting your time and money trying to get them to work.