And for 64th at 300 bpm , I just tried to see how does it sound on Guitar Pro tab software ... It's totaly blurred , a real mess , I still can't believe it could be achieved on guitar and sound decent.
Anyway , I can slide the chromatic scale up & down the whole neck 4 or 5 times per second , considering my neck has 24 frets ... That would be arounnd 120 notes per second !! :p
LOL