[Qgis-user] Qgis Form // Attached tool / Big performance problem for table opening

[celati Laurent]

Dear all,

I work with Windows with Qgis 3.34.13-Prizren.
I have a Qgis project destined to be shipped on a tablet for the field
(Qfield).
The project contains a polygonal layer of 3427 objects (file shp). There
are many columns with different types. There also relational values / joins
setted for this form. So the project also includes .csv files (for
relational values).

The problem : the opening of this table attribute takes up to 40 seconds. I
spent time to identify where the problem may come from. At one time I
thought for joins/relational values. Or also CSV format. As we can see here
:
https://gis.stackexchange.com/questions/423054/what-is-slowing-qgis-the-most-when-opening-form

After several hours of investigation, the source of the problem seems to
come from 4 columns (string) for strore the pictures. After removing those
4 columns of the form, the opening time of the table become normal.
I have tried to "play" with the parameter for this form attached tool, (as
for example relative/absolute path size of the images, etc.). But in vain.

Have people ever been confronted with this problem/limitation/problem of
table opeining performance regarding the attribute form design? Linking
with attached tool for image/picture ?
For information, a SS of the interface :

[image: image.png]


  [1]:
https://gis.stackexchange.com/questions/423054/what-is-slowing-qgis-the-most-when-opening-form
  [2]: https://i.sstatic.net/28yZWYM6.jpg
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