Spunk's cum shaders aren't handled 00SexoutCumScript, which is NG's 'cum splash explosion', ie the ejaculation itself.   The duration of post-orgasm cum shaders are limited by data fields (Alpha Fade Out Time) in the records for the shaders themselves (SpecialEffects/Effect Shader, the ones starting with "spunk" and not ending with "p"), and cannot be changed by script. If you change those values manually, you can use the MCM slider to match that duration, although the MCM slider duration shou