Originally Posted by: Greg@Sun
So when strumming as I increase speed I seem to lose control of the pick. It slides sideways or seems to get stuck on strings? I have tried .50 - heavy picks maybe I'm digging too deep?

Digging too deep can be a problem. When I hear or see students having this problem I suggest two things to check & work on.

1. Lighter strumming. Try to lightly graze across the strings. You want to make them sound, but with the least possible friction, amount of contact.

2. Less tension. Try to keep your arm, hands, fingers, everything as loose as possible. It seems like you need to grip the pick tightly in order to keep hold of it while playing. So, it's a little counter intutitive. You want to have just enough pressure to hold the pick & strike the strings. Any more is wasted effort & makes it harder to play.

I discuss & demonstrate here:

https://www.guitartricks.com/lesson.php?input=13957&s_id=1142

Hope this helps. If you have more questions please ask! Best of success!