diff --git a/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PerceptionComponent.cpp b/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PerceptionComponent.cpp
index 1b02ce4..55bfcae 100644
--- a/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PerceptionComponent.cpp
+++ b/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PerceptionComponent.cpp
@@ -280,7 +280,8 @@ AActor* UPS_AI_Behavior_PerceptionComponent::GetHighestThreatActor(
 		const AAIController* OwnerAIC = Cast<AAIController>(GetOwner());
 		const APawn* OwnerPawn = OwnerAIC ? OwnerAIC->GetPawn() : nullptr;
 
-		if (OwnerPawn)
+		// Only run on server — TActorIterator results differ on clients
+		if (OwnerPawn && OwnerPawn->HasAuthority())
 		{
 			const EPS_AI_Behavior_TargetType TopPriority = TargetPriority[0];
 			const UPS_AI_Behavior_Settings* Settings = GetDefault<UPS_AI_Behavior_Settings>();
diff --git a/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PersonalityComponent.cpp b/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PersonalityComponent.cpp
index 49f5e33..6fe1bc7 100644
--- a/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PersonalityComponent.cpp
+++ b/Unreal/PS_AI_Agent/Plugins/PS_AI_Behavior/Source/PS_AI_Behavior/Private/PS_AI_Behavior_PersonalityComponent.cpp
@@ -132,6 +132,12 @@ EPS_AI_Behavior_State UPS_AI_Behavior_PersonalityComponent::EvaluateReaction() c
 
 EPS_AI_Behavior_State UPS_AI_Behavior_PersonalityComponent::ApplyReaction()
 {
+	// Only server can change replicated state
+	if (!GetOwner() || !GetOwner()->HasAuthority())
+	{
+		return CurrentState;
+	}
+
 	const EPS_AI_Behavior_State NewState = EvaluateReaction();
 	if (NewState != CurrentState)
 	{
@@ -151,6 +157,12 @@ EPS_AI_Behavior_State UPS_AI_Behavior_PersonalityComponent::ApplyReaction()
 
 void UPS_AI_Behavior_PersonalityComponent::ForceState(EPS_AI_Behavior_State NewState)
 {
+	// Only server can change replicated state
+	if (!GetOwner() || !GetOwner()->HasAuthority())
+	{
+		return;
+	}
+
 	if (NewState != CurrentState)
 	{
 		const EPS_AI_Behavior_State OldState = CurrentState;