Repro steps

1. Open VisualFSharp.sln
2. Open service.fs file
3. Wait for semantic colorization to appear
4. Look at devenv.exe private set size, it's about 2GB

Expected behavior

Never consume more than 2GB, preferably less than that.

Actual behavior

Features like Document Highlight and Inline Rename take up to 20 seconds to complete, even without any changes in files. One of CPU cores is loaded at 100%. Occasional UI freezes (supposedly due to blocking GC).

Known workarounds

Do not open any files in large projects.

Related information

• master branch