[Qgis-user] Adding layer slows down QGIS dramatically after adding a layer

[Peter Cornelissen]

Hi

I am using a Geopackage with about 15 tables (a mixture of lines,
polygons and points), but each of these tables are
used 40 or 50 times with filters as many of the elements are used on
multiple layers.
However, I am now finding that as soon as I add a new layer QGIS slows down
and it is taking 60 seconds or more to do almost any action that involves
redrawing (zoom in/out/ pan etc) or even moving a layer within the layers
panel. If I save the project, close down QGIS and restart, it is fine again
until the next time.

Any suggestions?

Thanks, Peter
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