Use a 60 FPS redraw rate even if the stream is 30 FPS to reduce stutter

moonlight-common/src/com/limelight/nvstream/av/video/VideoStream.java

@@ -133,7 +133,7 @@ public class VideoStream {
 		this.decRend = decRend;
 		if (decRend != null) {
 			decRend.setup(streamConfig.getWidth(), streamConfig.getHeight(),
-					streamConfig.getRefreshRate(), renderTarget, drFlags);
+					60, renderTarget, drFlags);
 		}
 	}