Dynamic realtime for 3000 sip peers

Hello everyone,

If a system has around 3000 peers and the sip is configured with realtime caching, is there any adverse effect on the system or performance of asterisk? Because asterisk is now keeping 3000 peers information in its memory!

Also what if I disable rtcachefriends? Does it improve asterisk performance?

Desperately need to know.

Thanks in advance.