Just to clear the air around this one, and from the data we have at hadn, we have actually seen a decline in the number of crash and performance related issues in the latest releases. Crashes can occur due to various reasons including but not limited to problems with the code.
For some of the most common troubleshooting steps, see Do-it-yourself troubleshooting kit for Adobe Dreamweaver
If these do not help, and you have a purchased version of Dreamweaver CC, send me your Adobe ID, location, and phone number over a private message. We will get in touch with you for investigation.
Thanks,
Preran