Here are a two images of a map with the cliff frequency turned from 100% to 17%


To make sure my eyes were not deceiving me I put the two screenshots through diff checker:

The bright pink areas are the visual diff from the above image. The only changes are the slider position.
I know frequency is the "number of cliffs" but I count >20 different sets of cliffs so if this is a frequency change from 100%/17% even with some other weights there should be some sort of notable difference in these values and the result.