Simulating Lag

Packet Simulation Settings

Setting	Description
PktLag	Sets network packet lag (specified in ms)
PktLagVariance	Sets a variable network packet lag (± the amount specified in ms)
PktLoss	Simulates outgoing packet loss (specified in percent)
PktIncomingLoss	Simulates incoming packet loss (specified in percent)
PktDub	Simulates sending/receiving duplicate packets (specified in percent)
PktOrder	Simulates network packets received out of order (1 = enabled, 0 = disabled)

More settings can be found in the FPacketSimulationSettings docs

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How to apply Packet Simulation settings

These settings can be set in DefaultEngine.ini

[PacketSimulationSettings]
PktLag=250
PktLagVariance=20
PktLoss=10
PktDup=0
PktOrder=1

These settings can be set through the console

Console

NetEmulation.PktLag 300

Some of these settings can be set directly in the Project Settings