It’s not a good practice to allow immediate shutdown on a PC, as long as the OS doesn’t do checks for finished data transfers. You will lose data if SSD is not finished writing it. Yes, even with super fast SSD there might be stuff that takes seconds to complete.
I dunno. As a user, if you throw me a code that takes 120ms for my CPU to execute, and tell me there is an alternative that takes 2x-3x less time, I would look for someone who provides that instead.