cant realy go in to to many details, However we have realy slow perfomance with an SQL compact database that is about 700 mb on an sd card and also verys slow perfomance in genoral are ther any profilers I can ues?
I recently made big changes to an application to almost entirely remove the database element as it was making the application sooooo slow. It's hard to offer any help without details so all I can suggest is to have a radical rethink.