there are players who get rog-unlimitation as their top play with 93% acc at 2,5k pp and others that can barely do short 180 bpm streams at that point.
if you're the former, at first you probably just need some discipline and develop proper finger control to go with your speed, but I'm not sure since I used to be the latter. in that case you just gotta accept it, and gradually work your way up from the bottom. play deathstreams, regular streamy maps, and short bursts at bpms you can barely handle (however low that might be initially), but get tired in the process. Note: tired =/= aching pain, that's bad and indicates that your hand position is unhealthy.
just keep at it and don't be discouraged when your speed seems to fall and you feel like you lost all the progress you made after a short break. you'll be able to get it back to where it was and a bit higher after a while every time.