I noticed that sometimes that there are work units which generate decoys so quickly that they shut themselves down early. How about making the completion percentage more accurate? I believe that there is a 99 or 100-decoy limit. If that is so, then here is some logic to generate a more accurate completion percentage:

Report the greater of these two math results: either the number of decoys already generated divided by the number of decoys allowed by the number of decoys limit, or the current scheme.