C++ implementation problems are another matter, caused by how WG21 sadly works, than anything else. Ironically there are C# implementations that perform better

C++ implementation problems are another matter, caused by how WG21 sadly works, than anything else. Ironically there are C# implementations that perform better, exactly because they were developed without WG21 working environment, in a compiled managed language. For all the performance minded talk, the walk doesn't always follow. Also std::map cannot be improved by existing processes.