Deconvolution result does not match preview

[starhopper]

Hello Forum,
haven't work with deconvolution for about a year, now I was suprised with my newest image of M31. I made a preview and everthing works fine. After applying the deconvolution on the whole image, I recognized, that deringing makes white rings around the stars, never seen in the preview. I cannot tune Global dark and Global bright with the whole image, that would last to long.
Is this a bug or ist there a trick to avoid this?
Thomas

[Alejandro Tombolini]

Hi Thomas, this is how deconvolution works. Try increasing the previews watching how the deringing affect the rings that it will help, but you must make the last test in a preview of the full image.
Saludos, Alejandro. 

[starhopper]

Hi Thomas, this is how deconvolution works.

Hello Alejandro,
thanks for your reply, my image is a result of a drizzle integrated KAF11000 image at 8008px width, and my preview was large, so I had to wait 20sec even with my PC with a xeon processor. I will try to make it larger. Not really satisfying.
Thomas