Newly introduced in Transport 2.1 is the maxMessageSize parameter found on NetworkSettings, a customizable max packet size for restricting the size of packets other than 1400 bytes what was previously hardcoded into NetworkParameterConstants.MTU.

Netcode's CommandSendSystem does not yet recognize MaxMessageSize so changing this value will cause the send system to break when the system will want to send bigger packages then allowed in the CommandSendSystem by this value.

The thread can be find [[here|https://forum.unity.com/threads/1-2-0-exp-3-commandsendsystem-should-use-maxmessagesize-parameter-instead-of-hardcoded-mtu.1517500/]|https://forum.unity.com/threads/1-2-0-exp-3-commandsendsystem-should-use-maxmessagesize-parameter-instead-of-hardcoded-mtu.1517500/]