diff --git a/src/Executors/MaskQueryExecutor.cs b/src/Executors/MaskQueryExecutor.cs
index 96e786a..46e70f3 100644
--- a/src/Executors/MaskQueryExecutor.cs
+++ b/src/Executors/MaskQueryExecutor.cs
@@ -176,7 +176,7 @@ namespace DCFApixels.DragonECS.Core
 
             long* ptr = _versions;
             var slots = _world._poolSlots;
-            bool result = _maskInc.Length > 0 || _maskExc.Length > 0;
+            bool result = _maskInc.Length != 0 | _maskExc.Length != 0; //тут возможно нужно оптимизировать
             foreach (var slotIndex in _maskInc)
             {
                 ptr++;
diff --git a/src/Pools/EcsPool.cs b/src/Pools/EcsPool.cs
index c301bd5..40eb2cc 100644
--- a/src/Pools/EcsPool.cs
+++ b/src/Pools/EcsPool.cs
@@ -324,17 +324,14 @@ namespace DCFApixels.DragonECS
 #endif
             return span;
         }
-        private bool IsDenseEntitiesDelayedValid()
-        {
-            return _isDenseEntitiesDelayedValid;//_itemsCount == _denseEntitiesDelayedCount;
-        }
         private void UpdateDenseEntities()
         {
-            if (IsDenseEntitiesDelayedValid()) { return; }
-            _denseEntitiesDelayedCount = 0;
-            for (int i = 0, jRight = _itemsCount + 1; i < _capacity; i++)
+            if (_isDenseEntitiesDelayedValid) { return; }
+            _denseEntitiesDelayedCount = 1;
+            _denseEntitiesDelayed[0] = 0;
+            for (int i = 1, jRight = _itemsCount + 1; i < _capacity; i++)
             {
-                if (_sparseEntities[i] == 0 && i != 0)
+                if (_sparseEntities[i] == 0)
                 {
                     _denseEntitiesDelayed[jRight] = i;
                     jRight++;