UE 5.8 primary sources

All links were checked against Epic's UE 5.8 documentation on 2026-07-19.

Fundamentals

• Networking Overview
• Actor owner and owning connection
• Actor role and remote role
• Replicate Actor Properties
• Remote Procedure Calls
• Replicated Object Execution Order

Filtering and performance

• Actor Relevancy
• Actor Priority
• Actor Network Dormancy
• Detailed Actor Replication Flow
• Replication Graph

Components, subobjects, and scale systems

• Replicating Actor Components
• Replicating UObjects
• FFastArraySerializer
• Introduction to Iris
• Migrate to Iris

Testing and subsystem boundaries

• Testing, Debugging, and Optimization
• Networking Insights
• Console Commands for Network Debugging
• Networked Character Movement

UE 5.8 maturity notes

• Generic Replication is the default.
• Replication Graph is marked Beta.
• Iris is compiled in but remains Experimental and is not the default.
• The registered subobject list is the only subobject method compatible with Iris.