Scan for new items takes ages after syncing collection btw. two computers

[Jim Gomi]

On Sat, 2017-02-04 at 22:49 +0100, news at tcrass.de wrote:
> do you know if it's possible to teach digikam to store
> comments/remarks as metadate within the image file? 'Cause image
> comments are the reason why I'm -- so far -- syncing the database
> along with the images.

Settings -> Configure Digikam
select "Metadata" from left column

You then have a bunch of checkboxes for "Write this information to the
metadata". Check whichever ones you want. 
"Captions and Title" would be the relevant one in this case.