As you already know, RoboHelp Service Release 8.0.2 addresses the problem of slow performance and broken links in RoboHelp 8.
RoboHelp 8.0.2 update is now available through Adobe Update Manager (AUM). You can check for updates from the Help > Update menu in RoboHelp 8. This update is also available for download from RoboHelp Support Center.
Installing RoboHelp Service Release 8.0.1 followed by RoboHelp Service Release 8.0.2 addresses problems related to CPDs. However, you need to manually repair any damaged projects you have. See this tech note for the exact steps.