Improve ICMP Request

Is there a way to improve the “Ping” of a node.
Lets say I am currently getting between 400ms-700ms when Pinging a node.
How can that be improved to say take it down to about 300ms?
Possible?

Your router or firewall is probably blocking peer to peer connections and packets are going through the root servers. See the following knowledge base article for general tips.

https://zerotier.atlassian.net/wiki/spaces/SD/pages/6815768/Router+Configuration+Tips