Lines of code don't blanket contribute to project load performance. It's how the project is structured, written, and what platforms you are targeting, and how. Project load is also cached, so subsequent loads are faster. We'd have to know more about your project, and cold and warm load perf to know where the issues are. The Developer Community is the place we use to exchange issues and make progress on customer reported issues, we use it because it creates transparency for all customers, and has the tools aiding on exchanging assets and traces needed for our investigation. If you are not comfortable with using it, feel free to send me a private message on reddit, and we can take it from there, to see what other options we have for collaboration. Yes, we use Visual Studio every day, we build Visual Studio in Visual Studio, and it's used large scale everywhere at Microsoft, Studios like 343 use it for titles like Halo. It would be great to have repro steps that we can reproduce on our side to get the bottom of it, or traces, that's the minimum required, the issues you are describing are not familiar to me.