Can we somehow help to narrow down the cause? Some metrics or debug info you need? I am a developer and know how valuable good feedback and "error logs" are

I noticed that Space Age is more demanding, but this is not the problem at all (for me). The game runs totally fine on my M1 Macbook Pro for hours with native resolution off and high details. The significant drops in frame rate only occur on the external monitor (on the same settings). But as there ...