Hi @binary , thanks for you comment.
You are correct, we also have reproduction in this case. We are looking into it and will hopefully have a fix ready soon.
This issue is already logged as Playhead in Import window runs slower than audio playback after moving End point, and we are analysing it.
This is also an already known issue: Sample editor preview plays the sample pitched after it has been imported in low quality
Please let us know if the issues you see are different in any way and comment in respective bug topics or create a new one if needed.
Thanks for the support so far!