One thing that no-one tested is the overhead of all the sandbox, like, each module, lybrary of program run in a sandbox(some times they tweak the source code not need the sandbox) so I wanted to see the overhead of all of that
I think NixOS is also doing some layering that could cost performance. I am unsure about the storage size, if it is much more like flatpak and snaps that I also dislike.
I don't understand, if you run a program inside the sandbox and the program ask for a library, the kernel need to map the library from inside the sandbox to the program, that overhead that I'm talking about