Better optimisation for low-end pc

Uh i have been suffering in low FPS and i have installed the latest update and still no fps change is there a way to like improve FPS in a very low end PC cause my laptop can handle HOI4 (with lag but not crazy like infraspace)

Lower your screen resolution.

still lag



Infraspace is very CPU heavy.
If you only have 2 CPU Cores with low frequency on a laptop, the game lags.
You need a 4 Core CPU to get a good framerate in the game.

I have a good pc and it still lags a lot sometimes.

Similar here.
Ryzen 3900x (12 core, 24 thread) - when the city goes beyond a certain density, going over those areas causes the framerate to drop into the 20’s.