Visual Studio crashes on the code base I maintain. It's a monorepo using bazel to manage it, and between the sheer number of includes compilation units take, the hundred thousand plus compilation units themselves, and some decisions made early on that are hostile to VS code tooling because the original developers didn't use VS code (such as hiding template implementations in .inl files that are included in the corresponding .hh file), VS code is functionally unusable for us.

In general, the company moves forward because most of the same people who established the code base are still working here and they just already know all the quirks and can Intuit argument types, often because they wrote all the classes in question.