Here is a version of the Potcoin Windows wallet that reduces the max split from 2 million to 5 thousand:

potcoin-08.7.2-win32-5Kv2.zip

This version will cause you to stake more often if you have over 5K POT. It stakes more often because it divides up each stake into a max of 5 thousand coins instead of 2 million. This will not increase your staking reward. It should average to be about the same as the official wallet.

This version also implements a fix for allowing outputs to merge even if they're from the same transaction as the staked output. It does not include support for uPNP. I may compile in support for uPNP at a future date if time permits.

Source: https://github.com/CartmanSPC/Potcoin
Disclaimer: USE AT YOUR OWN RISK. DO NOT HOLD ME RESPONSIBLE FOR ANY LOST COIN.