fix

source/funkin/system/Conductor.hx

@@ -88,6 +88,12 @@ class Conductor
 		bpmChangeMap = [];
 		changeBPM(0);
 	}
+
+	public static function setupSong(SONG:SwagSong) {
+		reset();
+		mapBPMChanges(SONG);
+		changeBPM(SONG.bpm);
+	}
 	/**
 	 * Maps BPM changes from a song.
 	 * @param song Song to map BPM changes from.

source/funkin/system/MusicBeatState.hx

@@ -148,47 +148,7 @@ class MusicBeatState extends FlxUIState implements IBeatReceiver
 		}
 		call("update", [elapsed]);
 		
-		#if sys
-		// 4 threads
-		var partLength = Math.ceil(members.length / 4);
-		var done = [for(i in 0...Main.gameThreads.length) false];
-		for(part=>thread in Main.gameThreads) {
-			thread.events.run(function() {
-				var p:Int = part;
-				try {
-					var i:Int = partLength * p;
-					var num:Int = partLength * (p+1);
-					var basic:FlxBasic = null;
-			
-					while (i < num)
-					{
-						basic = members[i++];
-			
-						if (basic != null && basic.exists && basic.active)
-							basic.update(elapsed);
-					}
-					done[p] = true;
-				} catch(e) {
-					trace(e);
-					done[p] = true;
-				}
-			});
-		}
-		while(done.contains(false))
-			Thread.current().events.wait(0.0001);
-		
-		if (tooltips != null)
-			tooltips.update(elapsed);
-
-		if (_reload && _reload_countdown > 0)
-		{
-			_reload_countdown--;
-			if (_reload_countdown == 0)
-				reloadUI();
-		}
-		#else
 		super.update(elapsed);
-		#end
 	}
 
 	@:dox(hide) public function stepHit(curStep:Int):Void