Razor tooling in VS Code is slow to start up

[danroth27]

When I open a .razor file in VS Code, it seems to take a while for the Razor tooling to fully start up. When I test this in Windows Sandbox on my desktop machine, it seems to take over 10sec for the Razor tooling to startup with just the default Blazor Web App template. Is there anything we can do to speed this up?

Here's a screen capture of how long things take for me using the latest C# extension bits I got from @ryzngard:

[ryzngard]

2.60.26 has a significant perf improvement for medium and large projects. On my machine startup on small projects is ~11 seconds now. This is slightly slower than a small cs only project (~8 seconds).