HBC reads a file on your nand, device.cert to check if HBC was installed correctly. In betas it did not loaded this file from real nand, causing scam + bird.
I don't why SNEEK is so slow for everyone... When beta testing it would only take something like 2 secs to bootup on my SD card
Btw, I don't think SNEEK checks if autoboot is set, it automatically boots emulated SM.
check if you have an ios 60 in sys folder (mine wasn't working without it when beta testing)
Also, SNEEK autoboots the sm, it doesn't matter if autoboot is set to hbc/nothing