Surfing out on the shoulder instead of the pocket has nothing to do with the board - it's the lines you're drawing and where you're looking. Better surfers stay with the pocket to surf top-to-bottom unless the section is really fat and they can project out onto the shoulder for a big cutback.LIke freeride said, the board is fine.
I would take the quad setup out and put in a thruster.
I think the problem here is the board looks like it has more speed than you're utilizing. A lot of times on your forehand you're out on the shoulder instead of in the pocket and your right arm is not engaged. You're surfing linear on the thing. I think the board could be surfed aggressively as a quad in those conditions well but it's outside the skill level of surfers who are not effortlessly linking turns...i.e. the guys putting in 3 turns for the average recreational surfer's 1 turn.
Not trying to be a dick (I am far from a ripper) I'm just telling you exactly what's going on in that clip.
Backside looks fine as a quad, but just take it for a spin as a thruster and see if it improves all round.
Lastly, as @Duffy LaCoronilla said, start playing around on a midlength, I think it would benefit your surfing bigly and give you a more rewarding experience on your shortboard.
Advanced surfers also tend to stay on rail either as they're bottom turning or shifting to the opposite rail on the the snap or cutback. For this - well - the Tomos have 3-6" less rail line. There's a reason you don't see Tomos on tour.
The midlength suggestion is one I've made to myself and never taken myself up on it haha.
Full disclosure: ReForest surfs better than me.