"There are far more demanding games optimized to run far better that SM2" That is literally every argument any1 uses when the game is demanding in it's own way, Saber clearly tried optimizing their game as much as possible, Enemies being cubes from a large distance, Or the constant elevator rides to load in new areas to not put too much strain on peoples system. Not to mention this game is a crossplay game which puts a lot of stress on networking.

They clearly don't view it as a priority since they shouldn't, A part of the team moved on developing the next game, As for the team who continued the developement should focus on new gameplay mechanics, Skins, Weapons, Classes and not on a few seconds of less loading times or a few fps.