Browser Crashing
This article explains how to deal with browser crashes, which may occur when exporting very large PDF files.
Using compression to improve performance and stability
If you are experiencing browser crashes when exporting large PDF files, consider using compression. RadClientExportManager supports compression via the JavaScript pako library . Besides drastically reducing the output size, Pako enables the browser to use less memory while rendering the PDF. Chrome is known to crash on generating very large PDF-s and simply including this library will mitigate the problem.
Just load Pako with a <script> tag (window.pako should be available) and compression will be enabled automatically.