Hi Bern, what's the tempo of your song? This particular Realtrack works best at 75bpm, and I found that loading it into a song at a higher bpm sounded awful and had that excessive vibrato I think you're hearing.

If you want to use it in a song that's significantly faster than 75bpm, try setting the Timebase for that track to Half-Time - I've highlighted it in the RT picker in this screenshot.

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