Ahh well this may just be the default speed of the bullet... By default it has a fast constant speed but this may change in the post-jam release.
The way I programmed it, I believe that if you're using a smaller monitor, everything is closer together which could make it harder to play so watch out for that too.
I've already started working on a post jam version that should address some of these issues and improve general gameplay so hold on tight, it'll be out soon 😀