But we still need to now how much, at least a rough estimate, on how fast it homes in on a target. Like is this a never-miss system or just a slightly arcing beam?
Another thing: The beam can only change direction inside the ship's spatial bending range, or whatever you want to call it. So if you can change the direction of a beam at 5km out, you could realistically throw or break fighters and PA and stuff in the same radius. But if it really only affects lasers and not physical mass, you might want to explain why and/or how exactly -- we need a bare minimum threshold of technobabble explanation so as to deflect IC questions and plotholes.