Rooted, Encrypted Galaxy Note 8" stuck in bootloop!
Things to try


I'd say take off the batteries, put them back, go to download mode, and reflash the ROM. Better off download it again to be 100% certain it's OK (even if it is, sometimes certain ROMs happen to work only after a couple times flashing).
Also read the documentation of the ROM in case it needed your storage to be in a different filesystem format (ext4 or whatever).