Yeah, it's not clear if the wall time needed is due to Python being slow or not. eg could it be redone in a compiled language for a better result I'd kind of e

Yeah, it's not clear if the wall time needed is due to Python being slow or not. eg could it be redone in a compiled language for a better result I'd kind of expect that most of the core stuff is being done in C++ or similar behind the scenes though. Maybe (haven't looked). :)