How many IP/DNS blocks is took much?

Just purchased a NetGate 2100, got everything setup and working.

I installed pfBlockerNG, and added some feeds, below are my current total block amounts. This firewall will be deployed to a small office. How many IPs/DNS block is considered too much before it starts to slow down the network?

IPv4 - 33949
DNSBL - 31474

I have this list added but not enabled as it adds 140k to the DNS block list. I’m also blocking GeoIP on top spammers for china and russia.

The only thing that is impacting is the list size = more RAM. You can squeeze a ton more lists in if you opt to use the python module. The RAM savings is very significant.