It's gonna be much, much harder for us to diagnose anything blindly over the internet better than a professional fitter you spent 6 hours with.
But let's start with the basics. What is the exact saddle you are using? What is your riding position? Can we see some pictures, or better yet, a video?
Actively having to transfer weight off your perineum is not a great solution for aggressive cycling. It's much better to be able to put weight on that area without causing nerve issues.