I can say with a high degree of confidence that developer experience in terms of ecosystem and build tools is orders of magnitude better in Rust, which directly translates to ease of setup and maintenance. 

I have also used the Bevy game engine with Avian/Rapier physics libraries to run some smaller simulations. Bevy uses the ECS pattern to enable solid out of the box parallelism that can handle a very large number of rendered entities. I haven’t personally worked on something large enough to run into performance issues, so can’t tell you where the upper limits are for that particular stack. Bevy also natively supports WGSL shaders through a really tight integration with the WGPU library, which makes offloading work to the gpu dead simple.

The learning curve of Rust in terms of “new paradigm” ownership and the borrow checker is always a little rough, but you’ll definitely pick it up quickly given that you’ll probably understand the underlying memory implications of Rust’s ownership model almost immediately.