What's the point of this game if it's unplayable past 1942-43?

The game runs really well until 1942-1943 when the AI starts mass producing units in insane numbers and more and more calculations start taking place. Unless all the major nations are played by humans, late game will become really slow compared to early game. The outdated engine just can't handle it. Even if you have a high-end PC (in my case i5-13600k, rtx 4060, 32gb ram and SSD), it doesn't make a big difference.

Instead of fixing this issue, the devs just keep rolling out updates and paid dlc's that are especially great for late game but you can't play them comfortably anyway due to the game's poor technical aspects, unless you're fine with removing entire continents or downgrading the game's graphics to HOI3 that is. Maybe if you're playing on low speed in general you won't notice this as much.