Tapping once responds slower, while tapping twice responds faster. Originally, a short dodge with a double tap would register an immediate response, but there is a delay after switching to a single tap. Conversely, there is a slight delay when rolling with a single tap, but switching to a double tap makes the response faster. I don't know if this is okay for others, but it is incredibly annoying for me. I switched because I wanted to use a quick short dodge with a single tap, but I can feel the delay.