Period1 Rate10 feels very possible, This layout almost achieves it but we miss one quicksilver due to the timing on which we swap out the gold atom, so I have to add an extra cycle to make sure the quicksilver is generated.

I guess to go below 10 we need to create a P6+ solve, we can theoretically make the 6 outputs using only 4 gold atoms (each creates 5 quicksilver).
I've been only looking at stick solves, but now I think I need to look at Ls. They should be much easier to work with.