diff --git a/.buildkite/nightly.steps.yaml b/.buildkite/nightly.steps.yaml
index 3b9983f5..48e2b01b 100644
--- a/.buildkite/nightly.steps.yaml
+++ b/.buildkite/nightly.steps.yaml
@@ -37,7 +37,7 @@ env:
     GDK_REPOSITORY: "git@github.com:spatialos/UnrealGDK.git"
     MAIN_MAP_NAME: "Control_Small"
     SPATIAL_PROJECT_NAME: "unreal_gdk"
-    SPATIAL_RUNTIME_VERSION: "15.0.0-preview-6" ## the runtime version of SpatialOS
+    SPATIAL_RUNTIME_VERSION: "15.0.0" ## the runtime version of SpatialOS
 
 steps:
   - label: "generate-pipeline-steps"
diff --git a/DeployGame.bat b/DeployGame.bat
index acaef514..44e1d35a 100644
--- a/DeployGame.bat
+++ b/DeployGame.bat
@@ -14,7 +14,7 @@ set deploymentname=%gamename%%formatdate%
 cd spatial/
 spatial build build-config || goto :error
 spatial cloud upload %deploymentname% --force || goto :error
-spatial cloud launch %deploymentname% one_worker_test.json %deploymentname% --snapshot=snapshots/default.snapshot --cluster_region=eu --runtime_version=0.4.3 || goto :error
+spatial cloud launch %deploymentname% one_worker_test.json %deploymentname% --snapshot=snapshots/default.snapshot --cluster_region=eu --runtime_version=15.0.0 || goto :error
 spatial project deployment tags add %deploymentname% dev_login || goto :error
 spatial project deployment tags add %deploymentname% status_lobby || goto :error
 
diff --git a/Game/Content/Blueprints/NPCs/BTTask_UnocupyPatrolPoint.uasset b/Game/Content/Blueprints/NPCs/BTTask_UnocupyPatrolPoint.uasset
index 00718b30..6de0b7ee 100644
Binary files a/Game/Content/Blueprints/NPCs/BTTask_UnocupyPatrolPoint.uasset and b/Game/Content/Blueprints/NPCs/BTTask_UnocupyPatrolPoint.uasset differ
diff --git a/Game/Content/Blueprints/NPCs/BT_NPC.uasset b/Game/Content/Blueprints/NPCs/BT_NPC.uasset
index 1131418e..fd9b95af 100644
Binary files a/Game/Content/Blueprints/NPCs/BT_NPC.uasset and b/Game/Content/Blueprints/NPCs/BT_NPC.uasset differ
diff --git a/Game/Content/Characters/BP_SimulatedPlayerCharacter.uasset b/Game/Content/Characters/BP_SimulatedPlayerCharacter.uasset
index c6511c3b..9a9a56de 100644
Binary files a/Game/Content/Characters/BP_SimulatedPlayerCharacter.uasset and b/Game/Content/Characters/BP_SimulatedPlayerCharacter.uasset differ
diff --git a/Game/Source/GDKShooter/Private/Characters/GDKCharacter.cpp b/Game/Source/GDKShooter/Private/Characters/GDKCharacter.cpp
index 5a7a8d5a..38f608f1 100644
--- a/Game/Source/GDKShooter/Private/Characters/GDKCharacter.cpp
+++ b/Game/Source/GDKShooter/Private/Characters/GDKCharacter.cpp
@@ -209,3 +209,8 @@ bool AGDKCharacter::CanBeSeenFrom(const FVector& ObserverLocation, FVector& OutS
 	OutSightStrength = (float)PositiveHits / (float)NumberOfLoSChecksPerformed;
 	return PositiveHits > 0;
 }
+
+void AGDKCharacter::ClientMovementReset_Implementation()
+{
+	GetCharacterMovement()->ResetPredictionData_Server();
+}
diff --git a/Game/Source/GDKShooter/Public/Characters/GDKCharacter.h b/Game/Source/GDKShooter/Public/Characters/GDKCharacter.h
index 187bde8a..aade2da4 100644
--- a/Game/Source/GDKShooter/Public/Characters/GDKCharacter.h
+++ b/Game/Source/GDKShooter/Public/Characters/GDKCharacter.h
@@ -78,6 +78,13 @@ class GDKSHOOTER_API AGDKCharacter : public ACharacter, public IGenericTeamAgent
 	UFUNCTION(BlueprintNativeEvent, BlueprintCallable)
 	void StartRagdoll();
 
+	// ----- HACKY WORKAROUND, KEEP AWAY FROM PRODUCTION CODE ----
+	// This class is used by simplayer, which locally replaces the Pawn's controller without the server's knowledge
+	// Unpossessing a character resets its movement data, so this is used to inform the server that it happened.
+	// Getting rid of this hack means adding AIController-like capabilities to the regular PlayerController.
+	UFUNCTION(BlueprintCallable, Server, Unreliable)
+	void ClientMovementReset();
+
 private:
 	UFUNCTION()
 	void DeleteSelf();
diff --git a/LaunchSpatial.bat b/LaunchSpatial.bat
index 216fff97..e23f82d3 100644
--- a/LaunchSpatial.bat
+++ b/LaunchSpatial.bat
@@ -8,6 +8,6 @@ spatial worker build build-config
 rem To launch a local Spatial deployment with a different launch configuration, change the default_launch.json argument to the name of your configuration file, 
 rem for example one_worker_test.json or two_worker_test.json. Similarly, you can specify a different snapshot than the default one by replacing the value of 
 rem the --snapshot argument with the path to the snapshot you want to launch with.
-spatial local launch default_launch.json --snapshot=snapshots/default.snapshot --runtime_version=0.4.3
+spatial local launch default_launch.json --snapshot=snapshots/default.snapshot --runtime_version=15.0.0
 
 popd
diff --git a/spatial/spatialos.json b/spatial/spatialos.json
index d5a60dbc..9122c353 100644
--- a/spatial/spatialos.json
+++ b/spatial/spatialos.json
@@ -1,11 +1,11 @@
 {
   "name": "your_project_name_here",
   "project_version": "0.0.1",
-  "sdk_version": "15.0.0-preview-6",
+  "sdk_version": "15.0.0",
   "dependencies": [
     {
       "name": "standard_library",
-      "version": "15.0.0-preview-6"
+      "version": "15.0.0"
     }
   ]
 }