I just recently became able to do a few 5 stars. So, a few days ago I decided to hop off because my hand started hurting out of nowhere. The next day, it still hurt, so I stopped, next day, and then today. It still feels the same as the first day. It doesn't build up from when I start playing, I have it right from the beginning. For a specific example of the pain, it's starts in the middle of my left hand and doesn't stop until it reaches all of my fingers. I can feel it just from typing this. I wouldn't really describe it as pain but much more like it feels numb and my hand physically can't reach the speeds of 160BPM.. which is pretty low. If I try to a fast stream or somewhat fast stream my fingers will top out at a pretty slow speed.. IT's like my hand is moving in slow motion. Same thing for single taps. It feels numb from the back of my hand to my fingers...I don't want to consult a medical professional right away, instead I'll ask this loving community. If I don't get much help here, I'll then consider consulting a professional. Any idea what this is?