I have a new PNY 128gb card with speed up to 60 MB/s that I was thinking about using. I know there are several factors to consider. I know that Samsung shut down the adoptable memory feature of marshmallow, but can we still manually send some apps to the card? Or can the card only be used for files, photos and video? What speed of card is acceptable? Is my 60 MB/s fast enough, or will this slow down my phone and should I opt for a 90 MB/s card? Any thoughts on the subject are appreciated.