diff --git a/Pathfinding/RegionManager.cs b/Pathfinding/RegionManager.cs
index 304b64a..93a2f6f 100644
--- a/Pathfinding/RegionManager.cs
+++ b/Pathfinding/RegionManager.cs
@@ -28,7 +28,7 @@ namespace Pathfinding
             
             Region? loadedRegion = RegionFromId(id);
             if(loadedRegion is not null)
-                _regions.Add(loadedRegion!.regionHash, value: loadedRegion);
+                _regions.Add(loadedRegion!.regionHash, loadedRegion);
             return loadedRegion;
         }
 
@@ -42,7 +42,7 @@ namespace Pathfinding
             if (!File.Exists(filePath)) 
                 return null;
 
-            FileStream regionFile = new (filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
+            FileStream regionFile = new (filePath, FileMode.Open, FileAccess.Read, FileShare.Read, (int)new FileInfo(filePath).Length, FileOptions.SequentialScan);
             Region retRegion = JsonSerializer.Deserialize<Region>(regionFile, Region.serializerOptions)!;
             regionFile.Dispose();
             return retRegion;
@@ -60,7 +60,7 @@ namespace Pathfinding
             return r?.GetNode(nodeId);
         }
 
-        public bool TestValidConnectionForType(OsmNode node1, OsmNode node2, Tag.SpeedType type)
+        public bool TestValidConnectionForType(OsmNode node1, OsmNode node2, SpeedType type)
         {
             foreach (OsmEdge edge in node1.edges)
             {
@@ -71,15 +71,15 @@ namespace Pathfinding
             return false;
         }
 
-        public bool TestValidConnectionForType(OsmNode node1, OsmEdge edge, Tag.SpeedType type)
+        public bool TestValidConnectionForType(OsmNode node1, OsmEdge edge, SpeedType type)
         {
-            if (type == Tag.SpeedType.any)
+            if (type == SpeedType.any)
                 return true;
             byte speed = GetSpeedForEdge(node1, edge.wayId, type);
             return (speed is not 0);
         }
         
-        public OsmNode? ClosestNodeToCoordinates(Coordinates coordinates, Tag.SpeedType vehicle)
+        public OsmNode? ClosestNodeToCoordinates(Coordinates coordinates, SpeedType vehicle)
         {
             OsmNode? closest = null;
             double distance = double.MaxValue;
@@ -89,7 +89,7 @@ namespace Pathfinding
             foreach (OsmNode node in region.nodes)
             {
                 bool hasConnectionUsingVehicle = true;
-                if (vehicle is not Tag.SpeedType.any)
+                if (vehicle is not SpeedType.any)
                 {
                     hasConnectionUsingVehicle = false;
                     foreach (OsmEdge edge in node.edges)
@@ -110,21 +110,21 @@ namespace Pathfinding
             return closest;
         }
         
-        public byte GetSpeedForEdge(OsmNode node1, ulong wayId, Tag.SpeedType vehicle)
+        public byte GetSpeedForEdge(OsmNode node1, ulong wayId, SpeedType vehicle)
         {
             TagManager tags = GetRegion(node1.coordinates)!.tagManager;
-            Tag.WayType wayType = (Tag.WayType)tags.GetTag(wayId, Tag.TagType.highway)!;
+            WayType wayType = (WayType)tags.GetTag(wayId, Tag.TagType.highway)!;
             byte speed = 0;
             switch (vehicle)
             {
-                case Tag.SpeedType.pedestrian:
+                case SpeedType.pedestrian:
                     speed = Tag.defaultSpeedPedestrian[wayType];
                     return speed;
-                case Tag.SpeedType.car: 
+                case SpeedType.car: 
                     byte? maxSpeed = (byte?)tags.GetTag(wayId, Tag.TagType.maxspeed);
                     speed = Tag.defaultSpeedCar[wayType];
                     return maxSpeed < speed ? (byte)maxSpeed : speed;
-                case Tag.SpeedType.any:
+                case SpeedType.any:
                     return 1;
                 default:
                     return 0;