Yeah, Phystal isn't fast by any means. Its main strength is high early damage and getting past shields.
You have far too much
generation and not nearly enough
. Most of your damage will come from the 2 attack, and if you're planning on killing with Poison, you're going to need Phase Shields to survive such a drawn-out game. More than 4 Phys/4 Frac isn't necessary, though 6 Phys lets you have a better early rush.