I am trying out the demo version of Serato LE, primarily for time shifting. Have used it on acoustic piano and it works beautifully. However, when I attempt to slow down some drum tracks, I find that the quality is adversely affected. It sounds like there is almost a flange or phase issue. I am not shifting by major percentages, only 2% at this point. I notice that Serato Pro has an algorithm setting for different types of files (i.e. drums, melodic instruments, etc.). Has anyone had luck time shifting drums with LE, and if so, any suggestions for me?

Thanks!