I don't think Gojo has that problem at all. He sets parameters given the mass, velocity, and shape of things. All he would need to do is go "Anything over this speed isn't permitted past Infinity". Same for the other factors (Shape and Mass). Doubt even with a speed advantage she could get through. Only time Infinity would have an issue in this case is if she uses something completely foreign to him since his Infinity won't be acclimated to already block it out. But speed is something he's already considered for Infinity and set parameters for. So if she were faster, she wouldn't get past it by the merit of her speed alone.
That begs the question though; Has she shown the ability to dispel Spatial and Mathematics manipulation? I think the argument that will be brought up is that they negate the "magic" system itself, rather than the hax in and of itself (Magic in this case being Cursed Energy). But that begs another question; has she shown the ability to dispel or interact with "magic" (Cursed Energy in this case) at the atomic scale? Gojo's Six Eyes enables control over Cursed Energy at an atomic scale to manipulate space, physics, and mathematics. If she has, then sure, eventually finding a way to dispel Infinity is feasible. If not, then no amount of time would help her in trying to get rid of it (This is under the assumption that it dispels the power system itself and not the hax itself. But if it works by negating the hax itself, then it's a question of if she can negate the hax Infinity is comprised of on a atomic scale).
I mostly bring this up, because I feel this details are often overlooked.
