Hi Claus,

Some advice please.

The "Title Builder" and "Description Builder" worksheets are my focus here.
I have found that if I run either Description or Title macros, they take about 190 seconds plus another 90 seconds to complete.

12,000 Titles and 2000 Descriptions to column A on their respective sheets.
The GOOD news is that duplicates are very very rare. Have yet to find one on the Description sheet and Titles I usually get from 0 to 3. These are very acceptable results.

The BAD news is the length of time to run the codes.

I have tried Calculation set to manual on both codes and the time is very acceptable, about 1 second.
The major BAD news with this is that the duplicates occur at a huge and unacceptable level. So I guess there are some necessary calculations not happening and the duplications occur.

I'm open to suggestions, perhaps do those Titles and Descriptions calculations in a separate workbook/s and transfer the data to the proper columns on the main workbook..??

This is a Demo main workbook if you need to see anything on it.

https://www.dropbox.com/s/vz387bfi02...p%20B ox.xlsm

Thanks.
Howard