Of course everybody wants his server to run with maximum throughput. However this comes with cost, usually increased memory usage. This is especially important if you have huge number of s2s connections on your installations. High throughput means lots of memory for network buffers for every single s2s connection. You may soon run out of all available memory.
There is one configuration property which allows you to adjust the network buffers for s2s connections to lower your memory usage or increase data throughput for s2s communication.
More details about are available in the ////<<initPropertiesGuide,////init.properties guide under the link to --net-buff-high-throughput property description.