I've spent my entire career working in C++ writing low level code for video games (and a decent chunk of it writing backend services for said games, and the glu

I've spent my entire career working in C++ writing low level code for video games (and a decent chunk of it writing backend services for said games, and the glue between the two). If you want to talk about performance, you better come armed with numbers. If you don't, you're not writing "high performance" code.