suggest pppoe server centralized

Hi I have a centralized pppoe server (ccr1072) with about 4000 users with max traffic about 2.5GB download and 200M upload
i see that cpu of this router is about 40% and i have 2% loss packets from router to clients and from router to internet.
is possible that this router can’t keep these users?
maybe will be good to add other ccr1072 for routing and this use only for pppoe server?
thank you

nobody use centralized pppoe server?
no suggestion?

There is nobody that uses centralized pppoe?, Nobody neither mikrotik have an idea how to help growing clients i think

i would like to have a centralized pppoe server for about 5k users.

CHR with good server specs & Use src nat instead of masquerade.