Hi Matt, Best to ask the question in QGIS developers mailing list.
By the way, 2.18 is EOLed as off February 2019. So, best to upgrade your project to 3.4 branch at least. There will not be any improvement or bug fixing to 2.18, unless you fix it on your own QGIS branch. Regards Saber On Mon, 1 Jul 2019 at 11:02, matt caswell <matthewcasw...@hotmail.co.uk> wrote: > Hi All, > > I am having some issues with a project I am working on. Recently upgraded > qgis from 2.4 to 2.18 and the raster tiles I had used previously have > became very slow to render and flash when panning. > > I have turned on multi core rendering and changed the map update interval > which seems to set partial rendering of the tiles which has improved > performance. But for new tiles that load they still flash white for a large > amount of time. > > This is for a qt project written in c++ so hopefully this is the right > place to ask questions. But if not if someone could point me in the right > direction that would be awesome. Any help greatly appreciated! > > Many thanks, > Matt > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user -- Saber Razmjooei www.lutraconsulting.co.uk +44 (0)7568 129733
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