My only issue is when I pinch and swipe up to delete, it always asks if I'm sure. Haven't found a way to turn that off, so that's the only thing that's slowing it down for me.
It's an additional step to confirm, but as performance, it's related to the memory card read/write speed! I use the SanDisk 64 GB extreme plus, read/write up to 90 mbs. No performance issues no lag!