Thanks for the detailed report, and fair poin, battery saving should absolutely be a toggle, not forced on. I'll make that happen. The lag you're describing (getting worse as more things move) isn't something that should be happening on that hardware regardless of settings a Ryzen + 4060 should run this without breaking a sweat. That pattern of progressive slowdown sounds more like a rendering bug than a settings issue, so I'll dig into it.
Appreciate the honest feedback, and glad the game itself is holding up despite the technical frustration.