Some IntelliSense operations cause cpptools to stall until a TU update is complete

[sean-mcmanus]

This works, but may be too slow at times. Sometimes it takes 30 seconds to jump into correct header. Is anything being done about IntelliSense performance?

Originally posted by @ghuser404 in #2564 (comment)

[sean-mcmanus]

@ghuser404 Yeah, I saw some slowness when navigating through multiple headers.

My initial investigation showed that the main processing thread was getting stuck by a documentHighlight request when the cursor moved to the #include line before the Go to Def was done (this request is normally fast, but would be slow the 1st time the file is opened). So skipping that might fix this (it's possible there are more issues too though).

[bobbrow]

This should have been addressed with #7759. If you are still experiencing issues with this, please let us know.