Default image quality capped at 320dpi to reduce memory use
diff --git a/library/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.java b/library/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.java
index e66b8fe..1327219 100644
--- a/library/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.java
+++ b/library/src/main/java/com/davemorrissey/labs/subscaleview/SubsamplingScaleImageView.java
@@ -288,6 +288,7 @@
         density = getResources().getDisplayMetrics().density;
         setMinimumDpi(160);
         setDoubleTapZoomDpi(160);
+        setMinimumTileDpi(320);
         setGestureDetector(context);
         this.handler = new Handler(new Handler.Callback() {
             public boolean handleMessage(Message message) {