I'm going to recommend you use Report a Problem in VS to report the issue to MS directly. They will need the error logs and that tool will capture it.
While you wait though does this apply to any project type or just certain ones?
Run VS in safemode (
/safemode /log <logfile>) and see if the problem goes away. If it does then it is an extension that is likely causing the issue. The generated log information may provide more information.
Finally you might consider running the VSCollector tool to get more detailed information to share.