Without a picture, it's still difficult to fully diagnose it.
When I said motion blur in my previous post, I meant motion blur that is present in the clip before you've done anything else. Not motion blur added in After Effects.
If you try to stabilise a shot with natural motion blur in it, then it will look odd when stabilised. There's nothing you can do about it, except smooth the stabilisation out so it's not stabile so the effect is not so noticeable.
Cheers,
Ben
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