If network speed and low latency are so important, then probably other boards should be considered since even the fastest Raspberry PI still implements its Giga

If network speed and low latency are so important, then probably other boards should be considered since even the fastest Raspberry PI still implements its Gigabit Ethernet through USB and is limited to about 300Mbs; also its CPU performance lags behind many other newer and often cheaper boards. This list might help. https://www.hackerboards.com/home.php https://www.hackerboards.com/home.php