docs(pawn): adds some more comments on qhy we need sync comp

Source/RWTHVRToolkit/Private/Pawn/RWTHVRPawn.cpp

@@ -36,7 +36,10 @@ ARWTHVRPawn::ARWTHVRPawn(const FObjectInitializer& ObjectInitializer) : Super(Ob
 	LeftHand = CreateDefaultSubobject<UReplicatedMotionControllerComponent>(TEXT("Left Hand MCC"));
 	LeftHand->SetupAttachment(RootComponent);
 
-	// add a nDisplay
+	// Add an nDisplay Parent Sync Component. It syncs the parent's transform from master to clients.
+	// This is required because for collision based movement, it can happen that the physics engine
+	// for some reason acts different on the nodes, therefore leading to a potential desync when
+	// e.g. colliding with an object while moving.
 	SyncComponent =
 		CreateDefaultSubobject<UDisplayClusterSceneComponentSyncParent>(TEXT("Parent Display Cluster Sync Component"));
 	SyncComponent->SetupAttachment(RootComponent);