It also depends on the game. Rollback netcode is for games where your client fully simulates the game. This doesn't happen on a majority of games because of hid

It also depends on the game. Rollback netcode is for games where your client fully simulates the game. This doesn't happen on a majority of games because of hidden information. I don't even know if it scales beyond a fighting game, where you'll see rollback most commonly used. Part of the rollback is to go back to a saved gamestate a few seconds ago, and resimulate the entire game with the new (correct) input. Meaning to rollback 100ms, you would need to be able to resimulate that 100ms of gameplay in say 1 frame or 16ms.