Yeah, I'm thinking back to an unnamed game engine that touching any of the core headers incurred a ~1 hour rebuild, ~30 minutes with incredibuild. Heck, if you

Yeah, I'm thinking back to an unnamed game engine that touching any of the core headers incurred a ~1 hour rebuild, ~30 minutes with incredibuild. Heck, if you've ever had a complex codebase with LTCG, I've seen cases where linking alone took ~25 minutes.