oh i forgot all about that setting in the options menu. i was playing on easy already though so i was getting pretty frustrated with how long conversions were taking. i think maybe having the difficulty choice automatically change that setting would be a slightly better way of handling that. then if someone wants to increase or decrease it manually they can.I'd recommend at the start when it gives you the options choose Easy and Fast. And in the next update (also the final one) there will be an upgrade system for the chambers to add to their conversion power as well. On hard I think the game should last around 200 days-ish. If you are just doing story mode though, choose fast at the start and you can probably skip through it all quickly.