Why not use DYDX?

I’ve been playing, on and off, for some weeks. I’ve never had a profitable Arb, despite looking at arb ops directly on the sites, but FC just doesn’t show them. I don’t know about the tech specs, but would it be more profitable to use dydx for the flashloans, being that they only charge 2 wei?

In an efficient world, i would say that every arb window would be taken immediately as long as the profit can cover the fees (gas fees, flashloan fees, etc).