diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 4a0f422a2..c87fb9c11 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -650,8 +650,7 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 			$pk->started = $this->level->stopTime == false;
 			$this->dataPacket($pk);
 
-			$pos = new Position($this->x, $this->y, $this->z, $this->level);
-			$pos = $this->level->getSafeSpawn($pos);
+			$pos = $this->level->getSafeSpawn($this);
 
 			$this->server->getPluginManager()->callEvent($ev = new PlayerRespawnEvent($this, $pos));
 
@@ -809,8 +808,8 @@ class Player extends Human implements CommandSender, InventoryHolder, IPlayer{
 			return false;
 		}
 
-		$this->sleeping = $pos;
-		$this->teleport(new Position($pos->x + 0.5, $pos->y + 1, $pos->z + 0.5, $this->level));
+		$this->sleeping = clone $pos;
+		$this->teleport(Position::createPosition($pos->x + 0.5, $pos->y + 1, $pos->z + 0.5, $this->level));
 
 		$this->sendMetadata($this->getViewers());
 		$this->sendMetadata($this);
diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index 18b76853b..6cb8bfaf6 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -50,6 +50,7 @@ use pocketmine\level\generator\GenerationRequestManager;
 use pocketmine\level\generator\Generator;
 use pocketmine\level\generator\Normal;
 use pocketmine\level\Level;
+use pocketmine\level\Position;
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Vector3;
 use pocketmine\metadata\EntityMetadataStore;
@@ -917,6 +918,7 @@ class Server{
 	 */
 	public function unloadLevel(Level $level, $forceUnload = false){
 		if($level->unload($forceUnload) === true){
+			Position::clearPositions();
 			unset($this->levels[$level->getID()]);
 
 			return true;
@@ -2114,13 +2116,9 @@ class Server{
 		$this->generationManager->process();
 
 
-		if(($this->tickCounter % 600) === 0){
-			Vector3::clearVectors();
-			AxisAlignedBB::clearBoundingBoxes();
-		}else{
-			Vector3::clearVectorList();
-			AxisAlignedBB::clearBoundingBoxPool();
-		}
+		Vector3::clearVectorList();
+		Position::clearPositionList();
+		AxisAlignedBB::clearBoundingBoxPool();
 
 		Timings::$serverTickTimer->stopTiming();
 
diff --git a/src/pocketmine/block/Block.php b/src/pocketmine/block/Block.php
index 6374fa73a..0cafde47b 100644
--- a/src/pocketmine/block/Block.php
+++ b/src/pocketmine/block/Block.php
@@ -686,7 +686,7 @@ class Block extends Position implements Metadatable{
 			$block = new Block($id, $meta);
 		}
 
-		if($pos instanceof Position){
+		if($pos !== null){
 			$block->x = $pos->x;
 			$block->y = $pos->y;
 			$block->z = $pos->z;
diff --git a/src/pocketmine/block/Cactus.php b/src/pocketmine/block/Cactus.php
index 29110b7da..b7e11434e 100644
--- a/src/pocketmine/block/Cactus.php
+++ b/src/pocketmine/block/Cactus.php
@@ -28,7 +28,7 @@ use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\item\Item;
 use pocketmine\level\Level;
 use pocketmine\math\AxisAlignedBB;
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 use pocketmine\Player;
 use pocketmine\Server;
 
diff --git a/src/pocketmine/block/Grass.php b/src/pocketmine/block/Grass.php
index c36ef51aa..167b8a11a 100644
--- a/src/pocketmine/block/Grass.php
+++ b/src/pocketmine/block/Grass.php
@@ -56,7 +56,7 @@ class Grass extends Solid{
 			$z = mt_rand($this->z - 1, $this->z + 1);
 			$block = $this->getLevel()->getBlockIdAt($x, $y, $z);
 			if($block === Block::DIRT){
-				$block = Block::get($block, $this->getLevel()->getBlockDataAt($x, $y, $z), new Position($x, $y, $z, $this->getLevel()));
+				$block = Block::get($block, $this->getLevel()->getBlockDataAt($x, $y, $z), Position::createPosition($x, $y, $z, $this->getLevel()));
 				if($block->getSide(1) instanceof Transparent){
 					Server::getInstance()->getPluginManager()->callEvent($ev = new BlockSpreadEvent($block, $this, new Grass()));
 					if(!$ev->isCancelled()){
diff --git a/src/pocketmine/block/Mycelium.php b/src/pocketmine/block/Mycelium.php
index 433661ade..784d2350d 100644
--- a/src/pocketmine/block/Mycelium.php
+++ b/src/pocketmine/block/Mycelium.php
@@ -47,7 +47,7 @@ class Mycelium extends Solid{
 			$z = mt_rand($this->z - 1, $this->z + 1);
 			$block = $this->getLevel()->getBlockIdAt($x, $y, $z);
 			if($block === Block::DIRT){
-				$block = Block::get($block, $this->getLevel()->getBlockDataAt($x, $y, $z), new Position($x, $y, $z, $this->getLevel()));
+				$block = Block::get($block, $this->getLevel()->getBlockDataAt($x, $y, $z), Position::createPosition($x, $y, $z, $this->getLevel()));
 				if($block->getSide(1) instanceof Transparent){
 					Server::getInstance()->getPluginManager()->callEvent($ev = new BlockSpreadEvent($block, $this, new Mycelium()));
 					if(!$ev->isCancelled()){
diff --git a/src/pocketmine/command/defaults/SpawnpointCommand.php b/src/pocketmine/command/defaults/SpawnpointCommand.php
index 2aad6c167..8c05f7f30 100644
--- a/src/pocketmine/command/defaults/SpawnpointCommand.php
+++ b/src/pocketmine/command/defaults/SpawnpointCommand.php
@@ -70,14 +70,14 @@ class SpawnpointCommand extends VanillaCommand{
 				$x = (int) $this->getRelativeDouble($pos->x, $sender, $args[1]);
 				$y = $this->getRelativeDouble($pos->y, $sender, $args[2], 0, 128);
 				$z = $this->getRelativeDouble($pos->z, $sender, $args[3]);
-				$target->setSpawn(new Position($x, $y, $z, $level));
+				$target->setSpawn(Position::createPosition($x, $y, $z, $level));
 				Command::broadcastCommandMessage($sender, "Set " . $target->getDisplayName() . "'s spawnpoint to " . $x . ", " . $y . ", " . $z);
 
 				return true;
 			}
 		}elseif(count($args) <= 1){
 			if($sender instanceof Player){
-				$pos = new Position((int) $sender->x, (int) $sender->y, (int) $sender->z, $sender->getLevel());
+				$pos = Position::createPosition((int) $sender->x, (int) $sender->y, (int) $sender->z, $sender->getLevel());
 				$target->setSpawn($pos);
 				Command::broadcastCommandMessage($sender, "Set " . $target->getDisplayName() . "'s spawnpoint to " . $pos->x . ", " . $pos->y . ", " . $pos->z);
 
diff --git a/src/pocketmine/command/defaults/TeleportCommand.php b/src/pocketmine/command/defaults/TeleportCommand.php
index fa6cf24e6..558648722 100644
--- a/src/pocketmine/command/defaults/TeleportCommand.php
+++ b/src/pocketmine/command/defaults/TeleportCommand.php
@@ -88,7 +88,7 @@ class TeleportCommand extends VanillaCommand{
 		}
 
 		if(count($args) < 3){
-			$pos = new Position($target->x, $target->y, $target->z, $target->getLevel());
+			$pos = Position::clonePosition($target);
 			$origin->teleport($pos);
 			Command::broadcastCommandMessage($sender, "Teleported " . $origin->getDisplayName() . " to " . $target->getDisplayName());
 
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index 3c2118f65..6fd22b953 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -40,7 +40,7 @@ use pocketmine\level\Location;
 use pocketmine\level\Position;
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Math;
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 use pocketmine\metadata\Metadatable;
 use pocketmine\metadata\MetadataValue;
 use pocketmine\nbt\tag\Byte;
@@ -737,7 +737,7 @@ abstract class Entity extends Location implements Metadatable{
 	}
 
 	public function getPosition(){
-		return new Position($this->x, $this->y, $this->z, $this->level);
+		return Position::createPosition($this->x, $this->y, $this->z, $this->level);
 	}
 
 	public function getLocation(){
diff --git a/src/pocketmine/entity/FallingBlock.php b/src/pocketmine/entity/FallingBlock.php
index e05a6aa92..b23fa1067 100644
--- a/src/pocketmine/entity/FallingBlock.php
+++ b/src/pocketmine/entity/FallingBlock.php
@@ -88,7 +88,7 @@ class FallingBlock extends Entity{
 
 		if(!$this->dead){
 			if($this->ticksLived === 1){
-				$block = $this->level->getBlock($pos = Vector3::createVector($this->x, $this->y, $this->z)->floor());
+				$block = $this->level->getBlock($pos = Vector3::cloneVector($this)->floor());
 				if($block->getID() != $this->blockId){
 					$this->kill();
 					return true;
@@ -107,7 +107,7 @@ class FallingBlock extends Entity{
 			$this->motionY *= 1 - $this->drag;
 			$this->motionZ *= $friction;
 
-			$pos = Vector3::createVector($this->x, $this->y, $this->z)->floor();
+			$pos = Vector3::cloneVector($this)->floor();
 
 			if($this->onGround){
 				$this->kill();
diff --git a/src/pocketmine/event/entity/EntityMotionEvent.php b/src/pocketmine/event/entity/EntityMotionEvent.php
index 4d25620ea..6c0ea6b75 100644
--- a/src/pocketmine/event/entity/EntityMotionEvent.php
+++ b/src/pocketmine/event/entity/EntityMotionEvent.php
@@ -24,7 +24,7 @@ namespace pocketmine\event\entity;
 use pocketmine\entity\Entity;
 use pocketmine\Event;
 use pocketmine\event\Cancellable;
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 
 class EntityMotionEvent extends EntityEvent implements Cancellable{
 	public static $handlerList = null;
@@ -36,6 +36,9 @@ class EntityMotionEvent extends EntityEvent implements Cancellable{
 		$this->mot = $mot;
 	}
 
+	/**
+	 * @return Vector3
+	 */
 	public function getVector(){
 		return $this->mot;
 	}
diff --git a/src/pocketmine/event/entity/EntityMoveEvent.php b/src/pocketmine/event/entity/EntityMoveEvent.php
index 74602a46a..099c9a7a4 100644
--- a/src/pocketmine/event/entity/EntityMoveEvent.php
+++ b/src/pocketmine/event/entity/EntityMoveEvent.php
@@ -24,7 +24,7 @@ namespace pocketmine\event\entity;
 use pocketmine\entity\Entity;
 use pocketmine\Event;
 use pocketmine\event\Cancellable;
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 
 /**
  * @deprecated
diff --git a/src/pocketmine/level/Explosion.php b/src/pocketmine/level/Explosion.php
index 47ce62703..b4eeaf0e0 100644
--- a/src/pocketmine/level/Explosion.php
+++ b/src/pocketmine/level/Explosion.php
@@ -33,7 +33,7 @@ use pocketmine\event\entity\EntityExplodeEvent;
 use pocketmine\item\Item;
 use pocketmine\math\AxisAlignedBB;
 use pocketmine\math\Math;
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 use pocketmine\nbt\tag\Byte;
 use pocketmine\nbt\tag\Compound;
 use pocketmine\nbt\tag\Double;
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 5d3154ea8..908465c38 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -910,7 +910,7 @@ class Level implements ChunkManager, Metadatable{
 			return $this->blockCache[$index] = $air;
 		}
 
-		return $this->blockCache[$index] = Block::get($blockId, $meta, new Position($pos->x, $pos->y, $pos->z, $this));
+		return $this->blockCache[$index] = Block::get($blockId, $meta, $pos instanceof Position ? $pos : Position::createPosition($pos->x, $pos->y, $pos->z, $this));
 	}
 
 	/**
@@ -940,7 +940,7 @@ class Level implements ChunkManager, Metadatable{
 
 		if($this->getChunk($pos->x >> 4, $pos->z >> 4, true)->setBlock($pos->x & 0x0f, $pos->y & 0x7f, $pos->z & 0x0f, $block->getID(), $block->getDamage())){
 			if(!($pos instanceof Position)){
-				$pos = new Position($pos->x, $pos->y, $pos->z, $this);
+				$pos = Position::createPosition($pos->x, $pos->y, $pos->z, $this);
 			}
 			$block->position($pos);
 			$index = Level::chunkHash($pos->x >> 4, $pos->z >> 4);
@@ -1938,14 +1938,14 @@ class Level implements ChunkManager, Metadatable{
 			for(; $v->y < 128; ++$v->y){
 				if($this->getBlock($v->getSide(1)) instanceof Air){
 					if($this->getBlock($v) instanceof Air){
-						return new Position($spawn->x, $v->y === Math::floorFloat($spawn->y) ? $spawn->y : $v->y, $spawn->z, $this);
+						return Position::createPosition($spawn->x, $v->y === Math::floorFloat($spawn->y) ? $spawn->y : $v->y, $spawn->z, $this);
 					}
 				}else{
 					++$v->y;
 				}
 			}
 
-			return new Position($spawn->x, $v->y, $spawn->z, $this);
+			return Position::createPosition($spawn->x, $v->y, $spawn->z, $this);
 		}
 
 		return false;
diff --git a/src/pocketmine/level/Position.php b/src/pocketmine/level/Position.php
index 8e5f63af1..a3c12460f 100644
--- a/src/pocketmine/level/Position.php
+++ b/src/pocketmine/level/Position.php
@@ -21,13 +21,54 @@
 
 namespace pocketmine\level;
 
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 
 class Position extends Vector3{
 
+	/** @var Position[] */
+	private static $positionList = [];
+	private static $nextPosition = 0;
+	
 	/** @var Level */
 	public $level = null;
 
+	public static function clearPositions(){
+		self::$nextPosition = 0;
+		self::$positionList = [];
+	}
+
+	public static function clearPositionList(){
+		if(self::$nextPosition > 65536){
+			self::clearVectors();
+		}else{
+			self::$nextPosition = 0;
+		}
+	}
+
+	/**
+	 * @param $x
+	 * @param $y
+	 * @param $z
+	 * @param Level $level
+	 *
+	 * @return Position
+	 */
+	public static function createPosition($x, $y, $z, Level $level){
+		if(self::$nextPosition >= count(self::$positionList)){
+			self::$positionList[] = new Position(0, 0, 0, null);
+		}
+
+		return self::$positionList[self::$nextPosition++]->setLevel($level)->setComponents($x, $y, $z);
+	}
+
+	public static function clonePosition(Position $pos){
+		if(self::$nextPosition >= count(self::$positionList)){
+			self::$positionList[] = new Position(0, 0, 0, null);
+		}
+
+		return self::$positionList[self::$nextPosition++]->setLevel($pos->level)->setComponents($pos->x, $pos->y, $pos->z);
+	}
+
 	/**
 	 * @param int   $x
 	 * @param int   $y
@@ -42,7 +83,7 @@ class Position extends Vector3{
 	}
 
 	public static function fromObject(Vector3 $pos, Level $level = null){
-		return new Position($pos->x, $pos->y, $pos->z, $level);
+		return self::createPosition($pos->x, $pos->y, $pos->z, $level);
 	}
 
 	/**
@@ -52,8 +93,9 @@ class Position extends Vector3{
 		return $this->level;
 	}
 
-	public function setLevel(Level $level, $strong = false){
+	public function setLevel(Level $level){
 		$this->level = $level;
+		return $this;
 	}
 
 	/**
diff --git a/src/pocketmine/math/AxisAlignedBB.php b/src/pocketmine/math/AxisAlignedBB.php
index e9bc2773e..bb233da62 100644
--- a/src/pocketmine/math/AxisAlignedBB.php
+++ b/src/pocketmine/math/AxisAlignedBB.php
@@ -51,7 +51,11 @@ class AxisAlignedBB{
 	}
 
 	public static function clearBoundingBoxPool(){
-		self::$nextBoundingBox = 0;
+		if(self::$nextBoundingBox > 65536){
+			self::clearBoundingBoxes();
+		}else{
+			self::$nextBoundingBox = 0;
+		}
 	}
 
 	/**
diff --git a/src/pocketmine/math/Vector3.php b/src/pocketmine/math/Vector3.php
index 19bcba46b..1c1abfcd5 100644
--- a/src/pocketmine/math/Vector3.php
+++ b/src/pocketmine/math/Vector3.php
@@ -54,7 +54,11 @@ class Vector3{
 	}
 
 	public static function clearVectorList(){
-		self::$nextVector = 0;
+		if(self::$nextVector > 65536){
+			self::clearVectors();
+		}else{
+			self::$nextVector = 0;
+		}
 	}
 
 	/**
diff --git a/src/pocketmine/tile/Chest.php b/src/pocketmine/tile/Chest.php
index b0ff4f7d8..86b2b9a0f 100644
--- a/src/pocketmine/tile/Chest.php
+++ b/src/pocketmine/tile/Chest.php
@@ -26,7 +26,7 @@ use pocketmine\inventory\DoubleChestInventory;
 use pocketmine\inventory\InventoryHolder;
 use pocketmine\item\Item;
 use pocketmine\level\format\FullChunk;
-use pocketmine\math\Vector3 as Vector3;
+use pocketmine\math\Vector3;
 use pocketmine\nbt\NBT;
 use pocketmine\nbt\tag\Byte;
 use pocketmine\nbt\tag\Compound;