C# extension generally has acceptable performance (as long as you use Roslyn LSP and not the Omnisharp one, although it also was fast at the cost of higher memo

C# extension generally has acceptable performance (as long as you use Roslyn LSP and not the Omnisharp one, although it also was fast at the cost of higher memory usage and less stability). What could be slowing it down is other extensions, especially if they have heavy Roslyn analyzers. For large project it doesn't scale as well, which is where Rider comes into play, I still daily drive VSC as the editor since it's just way snappier and more fluid than Rider.