title: VS Code Intellisense is extremely slow
body: <p>I am using VSCode for more than a year and never faced this problem. The project I am working on is huge and VSCode is extremely slow when I am working on this project. 
  I tried other projects and they work fine but what's strange is on the same project, a team of 10+ is working and most of them use VSCode but there seems no problem with their VSC.</p>
  
  <p>I have to wait for like 2 minutes on first access to IntelliSense. So every time I open a file, I have to wait for like 2 to 3 minutes before I can see suggestions.</p>
  
  <p>When I open Project, I get these messages, which is totally fine I guess. It's only for the first 10 seconds.
  <a href="https://i.stack.imgur.com/FLXQs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/FLXQs.png" alt="Initialization"></a></p>
  
  <p>After initialization is finish, it still keeps loading for the next 2 minutes.</p>
  
  <p><a href="https://i.stack.imgur.com/dZdrC.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dZdrC.png" alt="Loading"></a></p>
  
  <p><strong>What I tried:</strong>
  I disabled all my extensions, reinstalled VScode, reinstall Windows (I'm using Windows 10), downgrade to previous version and even change my system but still, nothing works.</p>
  
  <p><strong>System Specs:</strong>
  Core I5 (3rd Gen) with 16GB of Ram and SSD of 500GB</p>