ISRD doesn't work properly

[rigri]

ISRD does not remove the dust properly. I can change the radius, but even if I put it on maximum, you can see the edges. You can see what I mean in the picture below. I already tried to change the resolution of the scan, but it doesn't change anything.

[LSI_Ketelhohn]

Dear user,

Try deactivating the USM sharpening.
It seems to sharpen the edges of the corrected area too much.

Kind regards,
Arne