diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index 881cf0c18..63617af9a 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -2281,7 +2281,7 @@ class Server{
 		$this->nextTick = microtime(true);
 		while($this->isRunning){
 			$this->tick();
-			$next = $this->nextTick - 0.001;
+			$next = $this->nextTick - 0.0001;
 			if($next > microtime(true)){
 				try{
 					time_sleep_until($next);
@@ -2547,8 +2547,9 @@ class Server{
 
 		if(($this->nextTick - $tickTime) < -1){
 			$this->nextTick = $tickTime;
+		}else{
+			$this->nextTick += 0.05;
 		}
-		$this->nextTick += 0.05;
 
 		return true;
 	}
diff --git a/src/pocketmine/command/CommandReader.php b/src/pocketmine/command/CommandReader.php
index a2783c15a..02a6dddc2 100644
--- a/src/pocketmine/command/CommandReader.php
+++ b/src/pocketmine/command/CommandReader.php
@@ -57,9 +57,7 @@ class CommandReader extends Thread{
 	 */
 	public function getLine(){
 		if($this->buffer->count() !== 0){
-			return $this->buffer->synchronized(function (){
-				return $this->buffer->shift();
-			});
+			return $this->buffer->shift();
 		}
 
 		return null;
@@ -76,9 +74,7 @@ class CommandReader extends Thread{
 		$lastLine = microtime(true);
 		while(true){
 			if(($line = $this->readLine()) !== ""){
-				$this->buffer->synchronized(function (\Threaded $buffer, $line){
-					$buffer[] = preg_replace("#\\x1b\\x5b([^\\x1b]*\\x7e|[\\x40-\\x50])#", "", $line);
-				}, $this->buffer, $line);
+				$this->buffer[] = preg_replace("#\\x1b\\x5b([^\\x1b]*\\x7e|[\\x40-\\x50])#", "", $line);
 			}elseif((microtime(true) - $lastLine) <= 0.1){ //Non blocking! Sleep to save CPU
 				usleep(40000);
 			}
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index 94430258f..1a193f40c 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -136,6 +136,8 @@ abstract class Entity extends Location implements Metadatable{
 	public $motionX;
 	public $motionY;
 	public $motionZ;
+	/** @var Vector3 */
+	public $temporalVector;
 	public $lastMotionX;
 	public $lastMotionY;
 	public $lastMotionZ;
@@ -205,6 +207,8 @@ abstract class Entity extends Location implements Metadatable{
 
 		$this->timings = Timings::getEntityTimings($this);
 
+		$this->temporalVector = new Vector3();
+
 		if($this->eyeHeight === null){
 			$this->eyeHeight = $this->height / 2 + 0.1;
 		}
diff --git a/src/pocketmine/entity/FallingSand.php b/src/pocketmine/entity/FallingSand.php
index 5e72ca8e5..0bc6ba72f 100644
--- a/src/pocketmine/entity/FallingSand.php
+++ b/src/pocketmine/entity/FallingSand.php
@@ -135,7 +135,7 @@ class FallingSand extends Entity{
 			$this->updateMovement();
 		}
 
-		return $hasUpdate or !$this->onGround or $this->motionX != 0 or $this->motionY != 0 or $this->motionZ != 0;
+		return $hasUpdate or !$this->onGround or abs($this->motionX) > 0.00001 or abs($this->motionY) > 0.00001 or abs($this->motionZ) > 0.00001;
 	}
 
 	public function getBlock(){
diff --git a/src/pocketmine/entity/Item.php b/src/pocketmine/entity/Item.php
index c8eac8cc4..bd58af67b 100644
--- a/src/pocketmine/entity/Item.php
+++ b/src/pocketmine/entity/Item.php
@@ -75,19 +75,16 @@ class Item extends Entity{
 		$this->server->getPluginManager()->callEvent(new ItemSpawnEvent($this));
 	}
 
-
-	public function attack($damage, EntityDamageEvent $source){
-		if($source->getCause() === EntityDamageEvent::CAUSE_FIRE_TICK){
-			parent::attack($damage, $source);
-		}
-	}
-
 	public function onUpdate($currentTick){
 		if($this->closed){
 			return false;
 		}
 
-		$tickDiff = max(1, $currentTick - $this->lastUpdate);
+		$tickDiff = $currentTick - $this->lastUpdate;
+		if($tickDiff <= 0){
+			return false;
+		}
+
 		$this->lastUpdate = $currentTick;
 
 		$this->timings->startTiming();
@@ -98,6 +95,9 @@ class Item extends Entity{
 
 			if($this->pickupDelay > 0 and $this->pickupDelay < 32767){ //Infinite delay
 				$this->pickupDelay -= $tickDiff;
+				if($this->pickupDelay < 0){
+					$this->pickupDelay = 0;
+				}
 			}
 
 			$this->motionY -= $this->gravity;
@@ -108,8 +108,8 @@ class Item extends Entity{
 
 			$friction = 1 - $this->drag;
 
-			if($this->onGround and ($this->motionX != 0 or $this->motionZ != 0)){
-				$friction = $this->getLevel()->getBlock(new Vector3($this->getFloorX(), $this->getFloorY() - 1, $this->getFloorZ()))->getFrictionFactor() * $friction;
+			if($this->onGround and (abs($this->motionX) > 0.00001 or abs($this->motionZ) > 0.00001)){
+				$friction = $this->getLevel()->getBlock($this->temporalVector->setComponents((int) floor($this->x), (int) floor($this->y - 1), (int) floor($this->z) - 1))->getFrictionFactor() * $friction;
 			}
 
 			$this->motionX *= $friction;
@@ -136,7 +136,7 @@ class Item extends Entity{
 
 		$this->timings->stopTiming();
 
-		return $hasUpdate or !$this->onGround or $this->motionX != 0 or $this->motionY != 0 or $this->motionZ != 0;
+		return $hasUpdate or !$this->onGround or abs($this->motionX) > 0.00001 or abs($this->motionY) > 0.00001 or abs($this->motionZ) > 0.00001;
 	}
 
 	public function saveNBT(){
diff --git a/src/pocketmine/entity/PrimedTNT.php b/src/pocketmine/entity/PrimedTNT.php
index 593f6ef1d..d25a52c00 100644
--- a/src/pocketmine/entity/PrimedTNT.php
+++ b/src/pocketmine/entity/PrimedTNT.php
@@ -113,7 +113,7 @@ class PrimedTNT extends Entity implements Explosive{
 		}
 
 
-		return $hasUpdate or $this->fuse >= 0 or $this->motionX != 0 or $this->motionY != 0 or $this->motionZ != 0;
+		return $hasUpdate or $this->fuse >= 0 or abs($this->motionX) > 0.00001 or abs($this->motionY) > 0.00001 or abs($this->motionZ) > 0.00001;
 	}
 
 	public function explode(){
diff --git a/src/pocketmine/entity/Projectile.php b/src/pocketmine/entity/Projectile.php
index e6c37d8f0..a7c01dd6f 100644
--- a/src/pocketmine/entity/Projectile.php
+++ b/src/pocketmine/entity/Projectile.php
@@ -178,7 +178,7 @@ abstract class Projectile extends Entity{
 				$this->hadCollision = false;
 			}
 
-			if(!$this->onGround or $this->motionX != 0 or $this->motionY != 0 or $this->motionZ != 0){
+			if(!$this->onGround or abs($this->motionX) > 0.00001 or abs($this->motionY) > 0.00001 or abs($this->motionZ) > 0.00001){
 				$f = sqrt(($this->motionX ** 2) + ($this->motionZ ** 2));
 				$this->yaw = (atan2($this->motionX, $this->motionZ) * 180 / M_PI);
 				$this->pitch = (atan2($this->motionY, $f) * 180 / M_PI);
diff --git a/src/pocketmine/entity/Squid.php b/src/pocketmine/entity/Squid.php
index 889a83bb7..d55bac496 100644
--- a/src/pocketmine/entity/Squid.php
+++ b/src/pocketmine/entity/Squid.php
@@ -143,7 +143,7 @@ class Squid extends WaterAnimal implements Ageable{
 
 		$this->timings->stopTiming();
 
-		return $hasUpdate or !$this->onGround or $this->motionX != 0 or $this->motionY != 0 or $this->motionZ != 0;
+		return $hasUpdate or !$this->onGround or abs($this->motionX) > 0.00001 or abs($this->motionY) > 0.00001 or abs($this->motionZ) > 0.00001;
 	}
 
 
diff --git a/src/pocketmine/math/Vector3.php b/src/pocketmine/math/Vector3.php
index c022463a4..d14efc802 100644
--- a/src/pocketmine/math/Vector3.php
+++ b/src/pocketmine/math/Vector3.php
@@ -53,15 +53,15 @@ class Vector3{
 	}
 
 	public function getFloorX(){
-		return (int) $this->x;
+		return (int) floor($this->x);
 	}
 
 	public function getFloorY(){
-		return (int) $this->y;
+		return (int) floor($this->y);
 	}
 
 	public function getFloorZ(){
-		return (int) $this->z;
+		return (int) floor($this->z);
 	}
 
 	public function getRight(){
diff --git a/src/pocketmine/utils/MainLogger.php b/src/pocketmine/utils/MainLogger.php
index 10c505241..c7d549e71 100644
--- a/src/pocketmine/utils/MainLogger.php
+++ b/src/pocketmine/utils/MainLogger.php
@@ -46,7 +46,7 @@ class MainLogger extends \AttachableThreadedLogger{
 		touch($logFile);
 		$this->logFile = $logFile;
 		$this->logDebug = (bool) $logDebug;
-		$this->logStream = "";
+		$this->logStream = \ThreadedFactory::create();
 		$this->start();
 	}
 
@@ -190,11 +190,12 @@ class MainLogger extends \AttachableThreadedLogger{
 			$this->attachment->call($level, $message);
 		}
 
-		$str = date("Y-m-d", $now) . " " . $cleanMessage . "\n";
-		$this->synchronized(function($str){
-			$this->logStream .= $str;
-			$this->notify();
-		}, $str);
+		$this->logStream[] = date("Y-m-d", $now) . " " . $cleanMessage . "\n";
+		if($this->logStream->count() === 1){
+			$this->synchronized(function(){
+				$this->notify();
+			});
+		}
 	}
 
 	public function run(){
@@ -206,13 +207,12 @@ class MainLogger extends \AttachableThreadedLogger{
 
 		while($this->shutdown === false){
 			$this->synchronized(function(){
-				if(strlen($this->logStream) > 0){
-					$chunk = $this->logStream;
-					$this->logStream = "";
+				while($this->logStream->count() > 0){
+					$chunk = $this->logStream->shift();
 					fwrite($this->logResource, $chunk);
-				}else{
-					$this->wait(250000);
 				}
+
+				$this->wait(25000);
 			});
 		}