Have Picasso load images into memory at the size they will be displayed.

Source/Android/app/build.gradle

@@ -56,5 +56,5 @@ dependencies {
     compile 'de.hdodenhof:circleimageview:1.2.2'
 
     // For loading huge screenshots from the disk.
-    compile "com.squareup.picasso:picasso:2.4.0"
+    compile 'com.squareup.picasso:picasso:2.5.2'
 }

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/adapters/GameAdapter.java

@@ -64,6 +64,8 @@ public class GameAdapter extends RecyclerView.Adapter<GameViewHolder>
 		// Fill in the view contents.
 		Picasso.with(holder.imageScreenshot.getContext())
 				.load(game.getScreenPath())
+				.fit()
+				.centerCrop()
 				.error(R.drawable.no_banner)
 				.into(holder.imageScreenshot);
 

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/dialogs/GameDetailsDialog.java

@@ -84,6 +84,8 @@ public class GameDetailsDialog extends DialogFragment
 		// Fill in the view contents.
 		Picasso.with(imageGameScreen.getContext())
 				.load(getArguments().getString(ARGUMENT_GAME_SCREENSHOT_PATH))
+				.fit()
+				.centerCrop()
 				.noFade()
 				.noPlaceholder()
 				.into(imageGameScreen);

Source/Android/app/src/main/res/layout/card_game.xml

@@ -15,7 +15,6 @@
             android:id="@+id/image_game_screen"
             android:layout_width="match_parent"
             android:layout_height="0dp"
-            android:scaleType="centerCrop"
             android:transitionName="image_game_screen"
             android:layout_weight="1"
             tools:src="@drawable/placeholder_screenshot"/>

Source/Android/app/src/main/res/layout/dialog_game_details.xml

@@ -31,7 +31,6 @@
             android:layout_alignParentRight="true"
             android:layout_alignParentStart="true"
             android:layout_alignParentTop="true"
-            android:scaleType="centerCrop"
             android:transitionName="image_game_screen"
             tools:src="@drawable/placeholder_screenshot"/>