i figured out the problem and have used the rom. its very smooth on the 2gb ram moto g5 plus.Check that you are using the latest version of the official TWRP. Maybe the file is corrupted, download it again.
---------- Post added at 05:36 PM ---------- Previous post was at 05:32 PM ----------
Got a minor bug with screenshot edits. Says markup keeps stopping. I have attached screenshot.
Markup doesn't not work for me too.