Thank you for this. For me it's less that he's underpowered, and more that he's a nightmare to play because there still aren't any reliable calculators with how much the updates have messed with his recipes. It's like you're shooting in the dark unless you can find a good cheap recipe and spam it or hold out for several floors with quality pickups until you get something good. Neither are fun.

how many times

big W mod, the best one in the workshop

sorry for taking too much to answer but I don't know how to make mods compatible with the mod menu config, if you want to change the chance of the duplication to happen just open the main.lua and in the line that has this: "local pickupspawn = taintedcairng:RandomInt(5)" change the 5 to another number that you want.
this code works like that: it picks a number from 0 to 4, if you increase that 5 to 10 for example, it will pick a number from 0 to 9, the duplication will always happen if the random number is 1

Can you add mod config menu support to change the chance of duplication? I feel like 20% is a little to high, but other people may find it fine.

Very nice buff