I see the post on the 68K forum, I was asking (likely poorly worded) the same thing as @zigzagjoe. Just change one variable at a time for a comparison.
Using the v092 ROM, with everything else the same, and the CPU at the default 25MHz, changing the RAM timings from 80ns to 60ns shows this improvement.
Using the v092 ROM, with everything else the same, and the CPU overclocked to 40MHz, changing the RAM timings from 80ns to 60ns shows this improvement.