You need to be already halfway through your swing by the time the ball gets under your nose, so it's not possible to trigger a shot there with the system working as designed.
I've tried the timing slider at 20 as a workaround to make the timing later before though, and it does kind of do the job.
I don't mind it halfway down for the quicks, though. Huge improvement from early in the delivery. I'd love it to go later if possible but there's a limit to what can be done without breaking the system.
Also note - when you increase the speed it pushes the timing window earlier as a side effect.