UE5 Multiplayer Replication Masterclass | GAS, RepNotify & Late Joiners

🆓 Free UE Multiplayer Starter Plugin → https://devgames3085.com/plugin/free.html 🚀 Multiplayer Help Pack (Pro) → https://devgames3085.com/plugin/pro.html 💬 Dev Support Community → https://devgames3085.com/community/ 🧠 Struggling with Unreal Engine multiplayer replication? Laggy clients? Out-of-sync animations? I’ve been there—and this video breaks down exactly how to fix all of it, from GAS Companion setup to reliable RPCs, replication best practices, and multiplayer optimization tips. You’ll learn: How to set up GAS Companion with Blueprints Sync character animations & attributes across clients How to handle late joiners and persistent states Fixing HUDs that fail under lag RepNotify vs RPC vs Multicast Proper use of reliable RPCs Why you should never trust the client Bonus: Top 5 multiplayer tips every UE dev needs ✅ Perfect for solo devs, Blueprint users, and anyone making PvP, co-op, or MMO-style games in Unreal. Chapters: 00:00 – Intro & RPC Limitations 00:28 – Animation Syncing Issues 00:47 – Installing GAS Companion 00:58 – Project Setup with GAS 01:37 – Transferring Character Blueprint 03:36 – Setting Up Animations 04:09 – Adding Attributes with GAS 05:01 – Creating Attribute Data Table 06:10 – Creating HUD with GAS 07:04 – Testing Multiplayer Replication 07:25 – Replication Basics & Visual Setup 10:05 – Flag Replication (Basic vs Persistent) 12:35 – Fixing Replication for Reconnects 26:39 – Using RepNotify Properly 29:33 – Top 5 Multiplayer Dev Tips 31:25 – Replication Deep Dive 32:50 – Variables, Functions, Characters 35:57 – Handling Late Joiners 36:37 – Net Update Frequency & Call Distance 37:33 – Why You Can't Trust Clients 38:47 – Hacking Examples & Secure Setup 39:30 – Server RPC Best Practices 41:16 – Outro & Final Tips #UnrealEngine5 #MultiplayerGameDev #GASFramework