Omnisharp taking ages to parse project on VSCode startup

I'm using VSCode as my code editor. Since one of the latest Unity releases, the startup time of Omnisharp is much higher than it was before. I noticed that there are many more *.csproj files in my folder now, although the number of assemblies hasn't changed since. It seems as if Unity is now using separate files for internal packages. May this have caused the increased startup times, or is this just a coincidence?