Sorry but when in the world is that even remotely acceptable that you consider last Gen was outside machine specs when the developers said sure two generations ago is perfectly fine, which btw, holy crap it’s not.
The game play does get harder with harder patterns of course but you also start getting more tools to counter them but I would suggest not going full bore theory craft breaking the game in Act 3, save it for NG+, which I would actually recommend for this game to really see the a plot in a very new light with your broken characters.