packetReliability 

Namespace: SynicSugar.P2P
Class: p2pConfig

public PacketReliability packetReliability

Description 

Setting to control the delivery reliability of this packet.
Check EOS document for more details.

Can set this value on UnityEditor.

using SynicSugar.P2P;

public class p2pConfigManager {
    void Setp2pConfig(){
        p2pConfig.Instance.packetReliability = Epic.OnlineServices.P2P.PacketReliability.UnreliableUnordered
    }
}