If default settings happen to work more optimal on your end you can re-assign them in the patch. Replace the respective lines in the XIII.ini with the following ones:
[Engine.Player]
ConfiguredInternetSpeed=5000
ConfiguredLanSpeed=10000

[IpDrv.TcpNetDriver]
...
MaxClientRate=20000
...
NetServerMaxTickRate=45
NetServerMinTickRate=30
LanServerMaxTickRate=90
LanServerMinTickRate=60
NetClientMaxTickRate=45
LanClientMaxTickRate=60
CONFClientNetSpeedStepUp=20
CONFClientInternetMinNetSpeed=1500
CONFClientInternetMaxNetSpeed=3000
CONFClientLanMinNetSpeed=10000
CONFClientLanMaxNetSpeed=11000
CONFClientLagToTakeAction=0.150
CONFClientMaxAllowedLag=0.300
CONFListenServerNetSpeedStepUp=50
CONFListenServerInternetMinNetSpeed=5000
CONFListenServerInternetMaxNetSpeed=7000
CONFListenServerLanMinNetSpeed=15000
CONFListenServerLanMaxNetSpeed=40000
CONFListenServerLagToTakeAction=0.150
CONFListenServerMaxAllowedLag=0.350
CONFDedicatedServerNetSpeedStepUp=50
CONFDedicatedServerInternetMinNetSpeed=5000
CONFDedicatedServerInternetMaxNetSpeed=15000
CONFDedicatedServerLanMinNetSpeed=15000
CONFDedicatedServerLanMaxNetSpeed=40000
CONFDedicatedServerLagToTakeAction=0.150
CONFDedicatedServerMaxAllowedLag=0.350
...