Really started to bog down after 800k, but still very respectable. I'm sure that by just splitting the difference on the load factor (once I go back to modulo buckets) we'll hit the simulation run. 2.45 is a pretty high factor and it not only increases the search rate but also the cost (plot above) due to longer exhaustive searches.
The run just completed on the mini in 69 minutes and 18 sec shutdown, (vs 54 min baseline for the 1/500 search, 67 baseline for the 1/250 search) and at an average overall FP rate of 0.53% , which means probably over 1.0% toward the end. Over 1/100 is a bit too high, but will def come down with the LF.
(edited)