I recently set up (19 days ago or so) a new, non-exit, relay. It's gotten the guard, stable and fast flags, but it's consensus weight keeps jumping up and down for some reason (my understanding is that it should keep rising slowly after getting the guard flag). /var/log/tor/notices.log doesn't show anything of interest (I was getting an error due to too little CPU/RAM for the traffic load I was seeing, but I doubled the size of the VM after around 2 weeks, which got rid of that error).
Relay in question: https://metrics.torproject.org/rs.html#details/4CA64E677ECFF23B138CFE70A6A02E94BDF3A805