Starting with 2092 revision, system for calculating chances and amount of drops for rating was completely changed. System is unique and has no analogues! Before adding on a life project, you should first test and study the innovations in configurations!
Now chance and amount of items in the drop and increase rates are linked to each other. At low chances, items will not increase in quantity! A lot of work has been done to optimize and reduce load when calculating drop. The information via shift+click fully corresponds to the real data on the drop.
Example of calculating the drop at mid rates for a monster:
x1 - drop rate
x25 - drop rate
x25 - drop rate & premium drop rate 30%
Rates are set without enabling additional modifiers!