I cannot notice any delay at 100+ wpm, but one thing I had to get used to is typing key combinations faster/holding the key for the right duration, I still lift a bit too fast a few times per week, f.e. getting 'a instead of A, but it is definitely becoming second nature, and even if I cannot eliminate it completely the ergonomics of home row shift, and other handy dual function keys, makes it still totally worth it for me.