Specifics on the updated engine?

[Sakonosolo]

The engine doesn't affect performance as much as a game made on it does. Every engine has limitations but you can choose to push those limitations or go well below them. For instance most engines will have support for very large textures but textures that max out the limitations of the engine are almost never used because they would take up so much vram that you wouldn't be able to have very many in memory at a time.

samueljustice00 (who seems to be a dev?) replied with a few things that the game does better than its predecessor. More physics affected objects (and more objects in general) in a given scene, larger maps, better lighting/shadowing, among other things. For all we know, the low in AMfP could be the equivalent of medium in TDD considering the seemingly higher overall quality of the assets in the game.