Thank you for all the ideas guys, I’ll have to run some tests. Currently just appending the scene didn’t quite do the trick, so I think I’ll have to do the one by one suggestion to check when it crashes.
I don’t think it’s a particularly heavy scene, but here’s the screenshot with the info:

I have disabled the particles simulation, so this is just the smoke. and the main model. Nothing too crazy I don’t think.
Everything is updated, it is a MacOS Sonoma 14.5. M1 Max Chip, 10 cores, 64GB of RAM, 4TB disk space. The GPU card is the built in M1 Max, 32 cores, Metal 3. I also have tried on my less spec’d Mac, which is the same, but just 32GB and only 1TB of Disk space (not that I think this makes a difference?)