[TalonDJ]

The biggest problem is in the control loop. Make that faster and a missile can maneuver faster.

Not exactly. In the case of a missile the processing power, even of 10-15+ year old processors, can already crunch the control loop faster than planes flight. The speed of light is pretty snappy. The slow downs end up being the sensors and the maneuvering itself. Older sensors had to physically move to track the target then the missile had to maneuver to point at it. That is a pretty significant limitation. When you 'dodged' a missile back then you were not maneuvering faster than the control loop, you were just maneuvering faster than the sensor could tack and/or faster than the missile turn to keep you inside its sensor's field of view. If you beat either of those it lost lock. But those were not about the speed of the electronics. There were about mechanical tracking speed and aerodynamic maneuvering speed.

[Mr. Lucky]

I wish I could talk like that.

[RFEngineer]

yes to what you said. The control loop is not just the electronics.