I use my SM-T585 with encryption. I can't imagine, what might be different with your setup. Sorry.It works great on my SM-T580 except for the encryption. After I enable encryption and reboot, it gets stuck on a black screen after inputing my PIN. I thought the OS was just going through the initial encryption process, but I left it for 4-5 hours and it was still stuck. Force-rebooting did not help either. I ended up re-installing the ROM without encryption this time.