ahh idk what the Problem is now but with the update to 13.5.6 the file is lagging like hell , especially trying to catch , on 13 to 13.5 it still runs like a charm. i dont have any mods atm. but had some Qol ones early on.
ok after few houers i got it to work again.The game still needs the gen 9 starter mod even tho i deleted the starter to play without the mod. with it back on it runs smooth again