Exactly, the kitchen isn't some quantum superimposed space that can be made bigger to accomodate more sandwiches per hour, it's not a fucking TARDIS or something. No, you have a max amount per hour, and not a single restaurant in the fucking country cares that there is an upper limit on what they can make. Nope, you, the workers, just need to move faster! Nevermind the limitations of physics, this is fast food and you're a bad person for not being faster!
This has gotten even worse with the advent of internet orders. Go to your local Dominos and you may walk in just at the right time to hear the people at the counter losing their minds because five 20-pizza orders came in within seconds of each other, and every single one of those orders is expecting their order in "10-20 mins" because that's what it said on the website.
The person whose order came in last is going to be waiting nearly an hour for their pizzas. Whose fault is this? Dominos corporate.