After unpacking the disillusionment. In direct comparison with a SanDisk Extreme 32 GB / 45 MB / s card felt the card especially when writing in the camera (PowerShot S120) and notebook (Sony Vaio 13) very slowly.
A test with CrystalDiskMark confirmed the feeling: The on paper (supposedly) twice as fast Transcend comes only in sequential read approach the actually slower SanDisk (Transcend: 40.6 MB / s read, Sandisk: 42.1 MB / s) - in everything else SanDisk is the old by at least (!) a factor of 2 faster!
And despite the fact that Transcend is specified at twice the speed ....
Thus my conclusion: card does not deliver what it promises and is priced accordingly. Go back and is replaced by a SanDisk.