[Qgis-user] QGIS 3.4.4 still giving delays and “not responding” issues on Windows 10

[Nicolas Cadieux]

Hi,

I notice a very slow start up when I have certain plugins activated.  A 
good example is the very interesting Canada Web Services plugin.  When 
that is activated and Qgis closed, the following start up will be 
very.... very slow and Qgis stalls on "Restoring loaded plugins".  The 
first thing I would do is to disable all the plugins.

Another possible problem I had much earlier (around Qgis 1.8) was with 
the OpenLayer Plugin.  If a project relied on this plugin, the project 
would crash or slow down if opened on a computer without the plugin.  I 
figure the problem was that the Qgis project was trying to open the 
absent plugin or was having problems finding the WMS servers added by 
the plugin.  Make sure this is not going on.  Perhaps plugins are being 
activated by the project??? Developers could tell us if this  is 
remotely possible.

Projects may also rely on WMS servers.  Maybe you are having trouble 
with  a slow WMS servers found in your project?  Open the project file 
with a txt reader like notepad++ and try to see if you have references 
to wms or web-based layers.  You may see a reference to a ghost layer ( 
a layer that you had loaded but no longer used).  This was a problem at 
some point with older versions of QGIS.

If this does not help, I would remove QGIS, destroy all associated 
temporary files, plugin files, all registry keys and user profiles (for 
every user on the computer including admin) and try reinstalling it. 
https://gis.stackexchange.com/questions/152873/how-to-completely-uninstall-and-remove-qgis-2-8-1-on-windows-vista

Nicolas



On 2019-01-30 10:53 a.m., David Addy wrote:
> I did love using QGIS until 3.4.1 came along. Ever since I have been plagued
> by the “Not responding” message and very slow start up. (See my previous
> posts “QGIS 3.4.3 becoming unusable for me on Windows 10,” and “QGIS 3.4.2
> still very slow to work in Windows 10”)
> However, when it came to 3.4.4 it seemed at first to be back to normal
> operations.
> After downloading I opened it and it came up fast, just as hoped. Click
> Project/Open recent/select from list, and it loads quickly with no issues. I
> could open the attribute table fast as you like, and the program is
> responding well.
> To close it I click Project/New Project and it clears away just as it
> should.
> I click Project/Open recent/and select a second project from the list. Once
> again everything works as it should, and cleared by Project/New Project as
> before.
> Thinking that everything was working fine I  repeated this procedure, and it
> all worked until I want to move to a new project. This time, although I had
> not amended the map, except for panning around and checking the styles etc,
> when I clicked on Project/New project, I got the message Do you want to save
> or discard the project.
> I clicked on Discard, and QGIS seemed to pause. It was reluctant to close,
> and also paused when I clicked on the X to close the whole window. This
> Discard process seems to have caused all future operations to become
> problematic.
> After that, every time I try to use it,  it was back to taking 30 seconds to
> open a new QGIS window and everything slowed right down again, with Not
> responding messages.
> On my next project , after the long delay in opening, I assembled my layers
> and loaded them, and added a style or two. This time I closed by
> Project/Save as/newname, and attempted to close the project by clicking on
> the X in the top right. I then got a Crash message. All comments welcome.
> <http://osgeo-org.1560.x6.nabble.com/file/t367907/crash30_01_19.jpg>
>
>
>
> --
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