Not sure if this is the right section to put this in but I thought it would be okay since it does happen while playing Rocksmith. I mainly play Classic Rock, Rock, Hard Rock and some metal. I have recently switched to completely playing with a short scale Bass which has helped with my playing considerably as I was finding it a bit of a stretch and sometimes painful with a lot of paying at the high end of the neck. But something I can't fix is on the rare occasion when I play something fast (Guns 'N Roses, Slash, Metallica etc) I get forearm pain in my fretting arm. I think it is more fatigue rather than something more serious but was looking for others experience? To best describe it is rather than pain it is as if my arm starts to feel numb which eventually goes into my hand and if it is a long song it can lead to me struggling to grip anything. But after the song if I rest for 5 minutes i'm fine to play again and if it's a slower song I experience no problems whatsoever. Since I don't play fast on a regular basis I am just wondering if it is because my muscles aren't used to it and are just fatigued? Any Input welcome?