XSLT Debugger Is Very Slow

When I run a transformation in the XSLT Debugger perspective it is very slow. Can I increase the speed?

If the transformation produces HTML or XHTML output you should disable rendering of output in the XHTML output view during the transformation process. To view the XHTML output result do one of the following:

Run the transformation in the Editor perspective and make sure the Open in Browser/System Application option is enabled.
Run the transformation in the XSLT Debugger perspective, save the text output area to a file, and use a browser application for viewing it (for example Firefox or Internet Explorer).