diff --git a/src/org/openstreetmap/josm/plugins/markseen/QuadTreeMeta.java b/src/org/openstreetmap/josm/plugins/markseen/QuadTreeMeta.java
index 5078767..84de96e 100644
--- a/src/org/openstreetmap/josm/plugins/markseen/QuadTreeMeta.java
+++ b/src/org/openstreetmap/josm/plugins/markseen/QuadTreeMeta.java
@@ -59,7 +59,7 @@ public WritableRaster getWritableTile(int tileX, int tileY) {
 
     private class QuadTreeEditExecutor extends ThreadPoolExecutor {
         public QuadTreeEditExecutor() {
-            super(1, 1, 5, java.util.concurrent.TimeUnit.MINUTES, new ArrayBlockingQueue<Runnable>(8));
+            super(1, 1, 5, java.util.concurrent.TimeUnit.MINUTES, new ArrayBlockingQueue<Runnable>(16));
         }
 
         @Override