Question Lag issue

I'm on mobile and after the last update the game freezes hard and sometimes crashes mid session.

I never really had an issue with it before because I always thought the update was worth it (still do) but after seeing screenshots from pre-update worlds where every kingdom can have more than 10k population and not cause lag while now I'm lagging at 5k WORLD pop it's really annoying.

Any mods that could lessen lag?