A 10% time difference can make or break whether a video game truly feels real time. That's 54fps => 60fps. If you mean "You typically get far more than a 10%

A 10% time difference can make or break whether a video game truly feels real time. That's 54fps => 60fps. If you mean "You typically get far more than a 10% return on low-level optimization investment," I agree. It's typically a dramatic improvement.