The settings are usable if you feel the need to modify them, here are the defaults, min and max values you can use. Anything outside of these are rejected by Legions.exe.
PacketRateToServer
Default: 32
Min/Max: 8/32
PacketRateToClient
Default: 16
Min/Max: 1/32
PacketSize
Default: 400
Min/Max: 100/450
The defaults are fine, increasing the packet rate to client on competitive servers is the only setting worth changing.