Ok, my bad for “I think” - I should have said: in my 30 year experience I’ve yet had to come across a system were good tests were a hindrance to performance. I’ve had many a time where complex investigations into performance problems were uncovered by systematic and automated tests.
If performance is a main goal, then surely TDD with performance in mind will give you a better advantage
Your comment was interpreted by many as "you can develop faster with testing than without" which is quite controversial. If you meant "quicker" as in "faster code", then that seems more plausible.
If performance is a main goal, then surely TDD with performance in mind will give you a better advantage