On the 3rd of September there will be a beta of our Q2 2007 release. We would appreciate your feedback as it will help us build our controls to better serve our clients' needs.
We will also appreciate your feedback on the performance problems you have. We are confident that our controls perform very well in the latest release (Q1 SP2), but we may be missing something. For example, the latest version of RadGridView has been improved with more than 30% over the Q1 2007 version, and it handles large data sources quite well. RadTreeView, on the other hand, is 5 times faster when loading 50,000 nodes than the standard treeview control. Themes are also optimized and now the initial theme loading time is the fastest ever. There are still a couple of small optimizations awaiting in the pipeline, but having the rich functionality of our controls in mind, we are not sure we can do better.
At any rate, we will appreciate it if you share what type of performance do you expect from our controls. Thanks in advance.
the Telerik team