5.5.4 outdated client

Development Programming & Scripting
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2

A few things you could try:

  1. Disable the Iris Plugin.
  2. bUseIris = false; in your .Target.cs
  3. bUseIris = false in your .Build.cs
  4. ↓
[SystemSettings]
net.Iris.UseIrisReplication=0
  1. Start your game with -UseIrisReplication=0 in the commandline.