AnimatingTilePanel Performance

[julesx]

I have an application with a TabControl and several TabItem.

Each TabItem has an AnimatingTilePanel. My ItemTemplate has a thumbnail image.

Even with ~100 max items per tile panel, the performance degrades and out of memory exceptions are occasionally thrown when switching tabs. Swapping out the AnimatingTilePanel for a plain old VirtualizingStackPanel shows a measureable performance increase and is error free.

Is AnimatingTilePanel just not able to handle that many items at that size? Or are there some tricks that I could be employing?