slow-mo text editing

I recently installed Design Review from Autodesk in order to view DWG files. Since then I've had all sorts of problems with Draw - slow opening, slow saving, slow text editing. On opening Object Properties, the docker goes into total apoplexy. The primary issue is with text editing, specifically when using the Backspace and Delete buttons - the characters delete in super slo-mo.
I'm referring to documents in paragraph text ranging from one page to fifteen. No images. I don't have problems with any other text editor, including WPX6.
Here's what I've tried -
Applied System Restore to "undo" the install
Repaired the CorelDraw installation
Cleared the temp files
Created new files
Opened a standard Corel template to check it's not something generic in the working files
Used different fonts
Cleared the "space" from the workspace file
Reverted to "default workspace"
Removed extraneous layers from the file (I found I had two layer 1's on each page - how is that possible?)
Set LiveText to 0
Set AVG to exclude .cdr extensions
I resolved the slow opening of Draw by doubling the VM. Any further suggestions would be much appreciated.