diff --git a/ClassicalSharp/Entities/LocalPlayer.cs b/ClassicalSharp/Entities/LocalPlayer.cs
index 71ca06386..e83300154 100644
--- a/ClassicalSharp/Entities/LocalPlayer.cs
+++ b/ClassicalSharp/Entities/LocalPlayer.cs
@@ -80,7 +80,7 @@ namespace ClassicalSharp {
 			SkinName = game.Username;
 			SkinIdentifier = "skin_255";
 			
-			SpeedMultiplier = Options.GetFloat( OptionsKey.Speed, 0.1f, 50, 7 );
+			SpeedMultiplier = Options.GetFloat( OptionsKey.Speed, 0.1f, 50, 10 );
 			PushbackPlacing = Options.GetBool( OptionsKey.PushbackPlacing, false );
 			NoclipSlide = Options.GetBool( OptionsKey.NoclipSlide, false );
 			DoubleJump = Options.GetBool( OptionsKey.DoubleJump, false );
diff --git a/ClassicalSharp/Model/PlayerModel.cs b/ClassicalSharp/Model/PlayerModel.cs
index ff3b5d057..969c78b66 100644
--- a/ClassicalSharp/Model/PlayerModel.cs
+++ b/ClassicalSharp/Model/PlayerModel.cs
@@ -53,7 +53,7 @@ namespace ClassicalSharp.Model {
 		}
 		
 		public override Vector3 CollisionSize {
-			get { return new Vector3( 8/16f + 0.6f/16f, 28.5f/16f - 0.4f/16f, 8/16f + 0.6f/16f ); }
+			get { return new Vector3( 8/16f + 0.6f/16f, 28.1f/16f, 8/16f + 0.6f/16f ); }
 		}
 		
 		public override BoundingBox PickingBounds {
diff --git a/ClassicalSharp/Network/NetworkProcessor.CPE.cs b/ClassicalSharp/Network/NetworkProcessor.CPE.cs
index 4240051a3..b089da692 100644
--- a/ClassicalSharp/Network/NetworkProcessor.CPE.cs
+++ b/ClassicalSharp/Network/NetworkProcessor.CPE.cs
@@ -387,7 +387,7 @@ namespace ClassicalSharp {
 			p.CheckHacksConsistency();
 			
 			float jumpHeight = reader.ReadInt16() / 32f;
-			if( jumpHeight < 0 ) jumpHeight = 1.4f;
+			if( jumpHeight < 0 ) jumpHeight = 39/32f;
 			p.CalculateJumpVelocity( jumpHeight );
 			p.serverJumpVel = p.jumpVel;
 			game.Events.RaiseHackPermissionsChanged();
diff --git a/ClassicalSharp/Network/NetworkProcessor.cs b/ClassicalSharp/Network/NetworkProcessor.cs
index 92783ca32..43af7d43e 100644
--- a/ClassicalSharp/Network/NetworkProcessor.cs
+++ b/ClassicalSharp/Network/NetworkProcessor.cs
@@ -132,7 +132,7 @@ namespace ClassicalSharp {
 				// Workaround for older D3 servers which wrote one byte too many for HackControl packets.
 				if( opcode == 0xFF && lastOpcode == PacketId.CpeHackControl ) {
 					reader.Remove( 1 );
-					game.LocalPlayer.CalculateJumpVelocity( 1.4f ); // assume default jump height
+					game.LocalPlayer.CalculateJumpVelocity( 39/32f ); // assume default jump height
 					game.LocalPlayer.serverJumpVel = game.LocalPlayer.jumpVel;
 					continue;
 				}