Fix: cleanup and minor perf improvements

Assets/Unheimlich_POC/Scripts/Features/Portals/Runtime/Portal.cs

@@ -508,8 +508,7 @@ namespace Unheimlich.Features.Portals
                 if (_viewTexture != null)
                     _viewTexture.Release();
                 
-                // Use DefaultHDR for better shadow and lighting compatibility in URP
-                _viewTexture = new RenderTexture(Screen.width, Screen.height, 24, RenderTextureFormat.DefaultHDR);
+                _viewTexture = new RenderTexture(Screen.width, Screen.height, PortalConstants.RENDER_TEXTURE_DEPTH, PortalConstants.RENDER_TEXTURE_FORMAT);
                 _viewTexture.filterMode = FilterMode.Bilinear;
                 _viewTexture.antiAliasing = 1;
                 _viewTexture.Create();

Assets/Unheimlich_POC/Scripts/Features/Portals/Runtime/PortalAudioProxy.cs

@@ -31,6 +31,7 @@ namespace Unheimlich.Features.Portals
     private Portal _portal;
     private Dictionary<AudioSource, AudioSource> _proxyMapping = new Dictionary<AudioSource, AudioSource>();
     private Dictionary<AudioSource, AudioLowPassFilter> _filterMapping = new Dictionary<AudioSource, AudioLowPassFilter>();
+    private Camera _playerCamera;
     
     private GameObject _lastLoadedRoomInstance;
     private bool _needsRefresh;
@@ -38,6 +39,7 @@ namespace Unheimlich.Features.Portals
     private void Awake()
     {
         _portal = GetComponent<Portal>();
+        _playerCamera = Camera.main;
     }
 
     private void OnEnable()
@@ -123,7 +125,7 @@ namespace Unheimlich.Features.Portals
     /// </summary>
     private void UpdateProxies()
     {
-        Camera playerCam = Camera.main;
+        Camera playerCam = _playerCamera;
         if (playerCam == null)
             return;
 

Assets/Unheimlich_POC/Scripts/Features/Portals/Runtime/PortalRoomManager.cs

@@ -32,7 +32,7 @@ namespace Unheimlich.Features.Portals
         
         /// <summary>
         /// Represents a room instance that has been loaded through a portal.
-        /// Caches room bounds for efficient distance calculations.
+        /// Caches room bounds and colliders for efficient distance/containment calculations.
         /// </summary>
         private class LoadedRoom
         {
@@ -42,6 +42,7 @@ namespace Unheimlich.Features.Portals
             public Portal SourcePortal;
             public Bounds CachedBounds;
             public bool BoundsCalculated = false;
+            public Collider[] CachedColliders;
         }
 
         private void Start()
@@ -184,7 +185,7 @@ namespace Unheimlich.Features.Portals
         
         /// <summary>
         /// Determines which room (if any) currently contains the player.
-        /// Uses collider bounds checks to detect room occupancy.
+        /// Uses cached collider bounds to detect room occupancy.
         /// </summary>
         private void UpdateCurrentPlayerRoom()
         {
@@ -196,10 +197,12 @@ namespace Unheimlich.Features.Portals
                 if (loadedRoom.RoomInstance == null)
                     continue;
                 
-                Collider[] roomColliders = loadedRoom.RoomInstance.GetComponentsInChildren<Collider>();
+                Collider[] roomColliders = loadedRoom.CachedColliders;
+                if (roomColliders == null) continue;
+
                 foreach (Collider col in roomColliders)
                 {
-                    if (col.bounds.Contains(_player.position))
+                    if (col != null && col.bounds.Contains(_player.position))
                     {
                         _currentPlayerRoom = loadedRoom.RoomInstance;
                         return;
@@ -247,7 +250,8 @@ namespace Unheimlich.Features.Portals
                 RoomInstance = roomInstance,
                 RoomId = roomId,
                 LoadPosition = portal.transform.position,
-                SourcePortal = portal
+                SourcePortal = portal,
+                CachedColliders = roomInstance.GetComponentsInChildren<Collider>()
             };
             
             _loadedRooms.Add(roomId, loadedRoom);