Silverlight performance design tips

Question

What's your top 3 Silverlight performance design tips?

Thanks

Answer 1

• Only transfer the data you need - use lazy loading where possible (via RIA Services etc)
• Only load the bare minimum at start-up. Use a module-based downloading pattern (MEF, PRISM or other). Silverlight developers seem to have forgotten the 8 second attention span of Internet users still applies to them.
• Don't do excessive fullscreen animations and expect a high frame-rate on all machines :)

Answer 2

• Use Virtualized UI (Virtualized stack pannels, ect..)
• Cache data client side in Isolated Storage
• Take advantage of MEF to reduce the amount downloaded when your app changes
• Use animated GIFs instead of Silverlight animation for loading animations