I am running ArchiCAD 25 (NOR) on a MacBook Pro M1 Max, with 64 GB RAM. The overall performance is not at all ground-breaking, but some performance improvements in surface menu, and surface painter. I work a lot with point clouds and I had really high hopes that the M1 Max with 32 core GPU would make this a breeze, but alas... Absolutely no real-life improvements over my old 2018 Intel MacBook Pro. In my opinion, Graphist should focus on boosting performance on ArchiCAD 26, because it seems that no matter what hardware you throw at it, there are no real performance boosts to justify the cost of upgrading hardware.
I spoke with Graphisoft Norway, and they said that Graphisoft are planning on bringing support for Apple Silicon 'next year'. This could be AC26 or AC27.