i just use cubase. it makes adjustments to the actual sample, rather than doing it on the fly. surely logic has a function like this?
i try to avoid doing real time pitching as much as possible, once you go past a semitone or two it usually starts to sound crappy, even with the high end plugins.
with cubase you can use a drawable envelope to make adjustments to the pitch over time too, like you would by automating the pitch control on a real time plugin.
i think this is the logic equivalent:
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