Stop threads on vision shutdown

src/main/java/com/volmit/iris/core/gui/VisionGUI.java

@@ -144,6 +144,13 @@ public class VisionGUI extends JPanel implements MouseWheelListener, KeyListener
                 help = false;
             }
         });
+        frame.addWindowListener(new java.awt.event.WindowAdapter() {
+            @Override
+            public void windowClosing(java.awt.event.WindowEvent windowEvent) {
+                e.shutdown();
+                eh.shutdown();
+            }
+        });
     }
 
     @Override

src/main/java/com/volmit/iris/engine/stream/utility/CachedStream2D.java

@@ -50,10 +50,6 @@ public class CachedStream2D<T> extends BasicStream<T> implements ProceduralStrea
 
     @Override
     public T get(double x, double z) {
-        if (IrisComplex.cacheLock.get()) {
-            return stream.get((int) x, (int) z);
-        }
-
         return cache.compute(Cache.key((int) x, (int) z), (k, v) -> v != null ? v : stream.get((int) x, (int) z));
     }