Visual Studio frequently hangs after running unit tests

[biggik]

Installed product versions

• Visual Studio: 2022 Community, 17.12.3 (and other recent versions)
• This extension: 1.1.228

Description

Note: this only happens when the FCC extension is enabled. Only recourse is to kill the devenv.exe process. I usually give up waiting after some minutes. While I was gathering info for this bug report, I guess about 8-10 minutes passed and suddenly VS became response. Typically I have given up after 3-4 minutes :)
We have a monorepo with ~20 projects and 150k LoC.
DevEnv.exe is typically showing 'Not responding' and 0 to 1% CPU during this, no noticeable increase in memory.

I've shared a zip file with the contents of the fine-code-coverage folder under the tests - you should have a link in your email

Steps to recreate

Fresh build (clean + rebuild) - not required, but I've been doing this quite a bit in the hope it helps :)
Run unit tests, either all or a subset
switch to a code file to check coverage - OR -
click in the Fine Code Coverage window

Current behavior

VS becomes unresponsive, often with a transparent white overlay window and will not accept any commands
Sometimes, after killing devenv, and repeating steps above, it will work fine for a while (e.g. for some files) - very often when I use the FCC window to filter the behavior will immedately occur

Expected behavior

Coverage information should be shown

Here is a snapshot of the log (I cannot copy/paste it due to a hang)

Task manager

[tonyhallett]

With a large project two types of FCC options can cause an issue.

NamespacedClasses is one - set to false.

HideFullyCovered, Hide0Coverage and Hide0Coverable - set to false.