Performance degrades in your Silverlight App!? What can you do?

Some time ago I had written Silverlight app and I confronted with difficulties of difference between WPF and Silverlight :). When I had vanquished mismatches I found that performance of my app was serous degraded. I have done a little investigate of ways that can help to correct this issues. 1. MaxFrameRate 2. EnableGPUAcceleration & BitmapCash 3. CompositionTarget.Rendering