This was the deck I played in the online Cache Refresh tournament. This is the deck at the end of the tournament. I made the following changes to it halfway through:
I'm pretty sure Bryan Stinson never fired, but I did benefit from Liquidation + free-to-rez traps at least once.
Right after I made those changes, I played someone who had very sensibly put Synth DNA Modification in their PU deck. "Aha!" I thought, "I should do that! I don't know how I missed it." But then I never got around to it.
What I'm saying is, you should not expect this deck to be very well tuned.
Incidentally, I have no idea why PU gets called potatoes. I just went along with it because I think it's funny. If someone could explain to me what it's about, I'd appreciate it.