I've been experiencing crashes with my 64GB Samsung PRO as well as a 32GB Samsung EVO both bought directly through Amazon, no resellers. Switching to an 8GB Sandisk Ultra I had lying around has fixed everything but I'd like to have something a little larger so I can carry a few games around with me. Before I do that though - is the problem with Samsung cards or with larger/faster cards in general? I ask this because a quick google made it seem like other people had problems with the Sandisk Extreme Pro that has 95mb/s read. Is there a list of 100% compatible cards anywhere?