Pre-loaded machines work, but I imagine you would have to move away from that once you support enough games, but it should be "easy" to just resume a machine to

Pre-loaded machines work, but I imagine you would have to move away from that once you support enough games, but it should be "easy" to just resume a machine to different games start states from disk. Afaik games are mostly using lots of CPU when starting so youre basically pre-computing all that and using the disk as a look-up table.