diff --git a/1.4/Assemblies/CombatAI.dll b/1.4/Assemblies/CombatAI.dll
index 45443d7..e59bead 100644
Binary files a/1.4/Assemblies/CombatAI.dll and b/1.4/Assemblies/CombatAI.dll differ
diff --git a/Media/fog1.png b/Media/fog1.png
new file mode 100644
index 0000000..1b8d35b
Binary files /dev/null and b/Media/fog1.png differ
diff --git a/Media/fog2.png b/Media/fog2.png
new file mode 100644
index 0000000..f3a4856
Binary files /dev/null and b/Media/fog2.png differ
diff --git a/Source/Rule56/ITRegionGridPrepatched.cs b/Source/Rule56/ITRegionGridPrepatched.cs
index 7c6079e..4330369 100644
--- a/Source/Rule56/ITRegionGridPrepatched.cs
+++ b/Source/Rule56/ITRegionGridPrepatched.cs
@@ -6,13 +6,13 @@ namespace CombatAI
     public class ITRegionGridPrepatched : ITRegionGrid
     {
         private readonly int        gridId;
-        private          ISRegion[] cells;
+        private readonly ISRegion[] cells;
         
-        public ITRegionGridPrepatched(Map map) : base(map)
+        public ITRegionGridPrepatched(Map map, int id) : base(map)
         {
             cells                                                      = new ISRegion[NumGridCells];
-            gridId                                                     = ITRegionGridPrepatchedHelper.CombatAI_ReginGridCounter(map);
-            ITRegionGridPrepatchedHelper.CombatAI_ReginGridCounter(map) = gridId + 1;
+            gridId                                                     = id;
+            Log.Message($"gridId:{id}");
         }
         public override void Set(int index)
         {
@@ -115,9 +115,6 @@ public sealed class IRegionFields
 
     public static class ITRegionGridPrepatchedHelper
     {
-        [PrepatcherField]
-        public static extern ref int CombatAI_ReginGridCounter(Map map);
-        
         [PrepatcherField]
         [ValueInitializer(nameof(InitRegionFields))]
         public static extern ref ITRegionGridPrepatched.IRegionFields CombatAI_RegionFields(Region region);
diff --git a/Source/Rule56/Maths.cs b/Source/Rule56/Maths.cs
index b3b6029..1a64971 100644
--- a/Source/Rule56/Maths.cs
+++ b/Source/Rule56/Maths.cs
@@ -144,6 +144,7 @@ public static byte Sqr(byte a)
             return (byte)(a * a);
         }
 
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static float Sqrt_Fast(float x, int iterations)
         {
             if (x < 0.001f)
@@ -210,6 +211,7 @@ public static float Sqrt_Fast(float x, int iterations)
             }
             return (bot + top) / 64f;
         }
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static int Sqrt_Fast(int a, int iterations)
         {
             if (a == 0)
diff --git a/Source/Rule56/SightGrid.cs b/Source/Rule56/SightGrid.cs
index 15f8363..7cef35e 100644
--- a/Source/Rule56/SightGrid.cs
+++ b/Source/Rule56/SightGrid.cs
@@ -73,18 +73,23 @@ public class SightGrid
         ///     Whether this is the player grid
         /// </summary>
         public bool trackFactions = false;
-        private bool wait;
+        /// <summary>
+        ///     SightGrid Id.
+        /// </summary>
+        public readonly int  gridId;
+        private         bool wait;
 
-        public SightGrid(SightTracker sightTracker, Settings.SightPerformanceSettings settings)
+        public SightGrid(SightTracker sightTracker, Settings.SightPerformanceSettings settings, int gridId)
         {
-            this.sightTracker     = sightTracker;
-            map                   = sightTracker.map;
-            this.settings         = settings;
-            grid                  = new ITSignalGrid(map);
+            this.gridId       = gridId;
+            this.sightTracker = sightTracker;
+            map               = sightTracker.map;
+            this.settings     = settings;
+            grid              = new ITSignalGrid(map);
             if (!Extern.active)
                 grid_regions = new ITRegionGridLegacy(map);
             else
-                grid_regions = new ITRegionGridPrepatched(map);
+                grid_regions = new ITRegionGridPrepatched(map, gridId);
             asyncActions          = new AsyncActions(1);
             ticksUntilUpdate      = Rand.Int % this.settings.interval;
             buckets               = new IBuckets<IBucketableThing>(settings.buckets);
@@ -140,18 +145,21 @@ public virtual void SightGridUpdate(bool gamePaused, bool performanceOkay)
         {
             if (gamePaused || performanceOkay)
             {
-                int limit        = gamePaused ? 32 : 8; 
-                int numGridCells = map.cellIndices.NumGridCells;
-                for (int i = 0; i < limit; i++)
-                {
-                    Region region = map.regionGrid.regionGrid[regionUpdateIndex];
-                    grid_regions.SetRegionAt(regionUpdateIndex, (region?.valid ?? false) ? region : null);
-                    regionUpdateIndex++;
-                    if (regionUpdateIndex >= numGridCells)
-                    {
-                        regionUpdateIndex = 0;
-                    }
-                }
+//                int limit        = gamePaused ? 32 : 8; 
+//                int numGridCells = map.cellIndices.NumGridCells;
+//                for (int i = 0; i < limit; i++)
+//                {
+//                    Region region = map.regionGrid.regionGrid[regionUpdateIndex];
+//                    if (region?.valid ?? false)
+//                    {
+//                        grid_regions.SetRegionAt(regionUpdateIndex, region);
+//                        regionUpdateIndex++;
+//                        if (regionUpdateIndex >= numGridCells)
+//                        {
+//                            regionUpdateIndex = 0;
+//                        }
+//                    }
+//                }
             }
         }
         
diff --git a/Source/Rule56/SightTracker.cs b/Source/Rule56/SightTracker.cs
index a185de7..c0ce4ca 100644
--- a/Source/Rule56/SightTracker.cs
+++ b/Source/Rule56/SightTracker.cs
@@ -25,21 +25,21 @@ public SightTracker(Map map) : base(map)
         {
             fogGrid = new ITFloatGrid(map);
             colonistsAndFriendlies =
-                new SightGrid(this, Finder.Settings.SightSettings_FriendliesAndRaiders);
+                new SightGrid(this, Finder.Settings.SightSettings_FriendliesAndRaiders, 0);
             colonistsAndFriendlies.gridFog        = fogGrid;
             colonistsAndFriendlies.playerAlliance = true;
             colonistsAndFriendlies.trackFactions  = true;
 
             raidersAndHostiles =
-                new SightGrid(this, Finder.Settings.SightSettings_FriendliesAndRaiders);
+                new SightGrid(this, Finder.Settings.SightSettings_FriendliesAndRaiders, 1);
             raidersAndHostiles.trackFactions = true;
 
             insectsAndMechs =
-                new SightGrid(this, Finder.Settings.SightSettings_MechsAndInsects);
+                new SightGrid(this, Finder.Settings.SightSettings_MechsAndInsects, 2);
             insectsAndMechs.trackFactions = false;
 
             wildlife =
-                new SightGrid(this, Finder.Settings.SightSettings_Wildlife);
+                new SightGrid(this, Finder.Settings.SightSettings_Wildlife, 3);
             wildlife.trackFactions = false;
 
             factionedUInt64Map = new IThingsUInt64Map();