It's the SD card. Maybe there'll be some performance improvement with updates, but SD cards are making all the difference. I first flashed android to a 32gig Samsung, also U1, oldish but was a decent card, and I had slow boots, failed boots, stuck setup and random system freezes, just constantly. I finally got around to setting it up on my main 200gig Samsung, A1, not brand new but pretty modern, and it boots fast, setup went fine, and it's generally stable.this is very slooooow for me, the SD is 64G U1 class (UNS-1), so not too bad
first try it could no finish the setup, it looped through the google login process
after that it booted into android but it's way too slow, I have 5-6 years old tablets (acer iconia A500 and some NEXUS from the same generation ) and are much faster that this
does other have the same speed issue, I was planing to use it for comics reading with comicrack, but this is unusable