Also, use NetworkProfiler (Unreal command: netprofile ) to find unnecessary replication that runs even in single-player. | Tool | Purpose | Command example | |------|---------|----------------| | Unreal Build Tool (UBT) | Analyze dependencies | -Mode=QueryTargets | | Unreal Header Tool (UHT) | Detect reflection bloat | -Verbose | | Rider/VS Profiler | Find binary hotspots | Performance Profiler | | Perforce/Git | Track Build/Binaries changes | git diff --stat | | PakTool | Split optional MP assets into separate .pak | UnrealPak.exe | Part 5: Common Pitfalls & Fixes Pitfall 1: The “Missing Entry Point” Error When loading optional multiplayer DLL:
void UMyGameInstance::HostSession()
if (OnlineSubsystem && !IsRunningDedicatedServer()) OnlineSubsystem->Shutdown(); GEngine->DestroyNamedNetDriver(NAME_GameNetDriver); Super::Shutdown(); fgoptionalmultiplayerbuildbin better
bUseUnityBuild = true; bUsePCHFiles = true; bUseLTCG = true; // For Windows Result: ~15% smaller binary, ~5-10% faster load. The “optional” part often fails because the network driver loads too late or too early. Also, use NetworkProfiler (Unreal command: netprofile ) to
IOnlineSubsystem::Get()->Init(); bNetworkInitialized = true; bNetworkInitialized = true
Procedure Entry Point Could Not Be Located in FG_Multiplayer.dll Ensure all exported functions are extern "C" or use __declspec(dllexport) with matching calling conventions. Pitfall 2: Double Initialization of Online Subsystem Fix: Add a flag: