In theory - if 'high velocity' ammo (hotter ammo) gives you less trouble, then either recoil spring or main spring (or both) are a little too strong. Also, make sure there is no tight spots within slide's full travel!! Manually cycle the slide with and without recoil spring to feel how smooth the stroke is.
Thing is - as slide goes back, it has to compress both of those springs, recoil and main, if it's short-stroking, then start with recoil spring first - cut a coil or two. The springs are not that expensive and are available from cz-usa.