I as well as others have already reported that the "Rapid Fire" option is causing the game to crash.
I filed an update request and was denied that it is working fine.
So I'm going to detail exactly what happens.
I boot up the game, I turn on any option as desired at the time according to their instructions. Including Rapid Fire.
Rapid Fire when turned on will crash your game when you press esc to pause your game or when you enter any menu with it enabled. It crashes the game 100% and causes the game's ram usage to suddenly spike up.
Every other option works fine except for this one.
Please don't ask me to "File an update request" as I already did that according to the post that was mentioned by Nook on the 30th. This accomplished nothing as apparently it was found to be working. If this option worked I would not have wasted 500RC posting the request. Nor would there be people in this thread saying that there is an issue. Please look into this or as an alternative, contact me via DM and I can screenshare the problem occuring live on discord.
I tested the trainer and it works fine. Be sure to read the instructions on how to activate the trainer/options in the readme
The crash with rapid fire should be fixed in upcoming trainer update
tyvm