Incremental backup in Ghost 14 takes TWICE as long as full backup - WHY???

I just set up my system with Ghost 14.  I did a full backup one day and it took 1:20 to finish with a file size of 140GB.  The next day I did an incremental backup and it took nearly 3 hours to backup just 1.4GB.

 

It appears that most of the time was identifying the files to backup

 

Why so slow???

 

Is there anything I can do to speed up this process?

 

TIA,

 

Cash