[Qgis-user] 2.6 very slow to render and uninstalling 2.6 - Solution

[Brett Adams]

I now have 2.6 running “normally” on W7-64

 

Previously everything done in in Layer control took an eternity to respond, especially if it involved raster images.    I’d been running 1.8 which worked perfect.

 

Solution was to uninstall and “clean” all QGIS files as follows;

 

1.      Uninstall 1.8 and 2.6  using windows uninstall 

2.      Clean the Registry of all folders with “qgis” in the title.  I used Regedit which comes standard with windows.

3.      Delete the .qgis2 and .qgis folders from  “users”.  In my case these are located at C:\Users\BADAMS

4.      Restart machine

5.      Load 2.6

6.      Problem solved!!!

 

 

Interestingly when reloading 2.6  it tells me 2.6 is already loaded, so something remained during this process.  Didn’t seem to matter.

 

Thanks everyone for your help.

 

Brett

 

 

From: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Brett Adams
Sent: Tuesday, 25 November 2014 1:58 PM
To: 'Saulteau Don'; 'qgis-user'
Subject: Re: [Qgis-user] 2.6 very slow to render

 

Checked out your suggestion Donovan.

 

As it’s a new installation I don’t think external plugins are loaded.  (Guess that’s why I don’t have the qgis2 folder??? )

 

Data storage is small SHP files (100 points) and a series of raster images (300kB).  

 

Same files that were being used in 1.8.

 

 

Brett

 

From: qgis-user-bounces at lists.osgeo.org [mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Saulteau Don
Sent: Tuesday, 25 November 2014 1:06 PM
To: qgis-user
Subject: Re: [Qgis-user] 2.6 very slow to render

 

One thing you can check for is if there is a faulty plugin causing the issue.

 

Try backing up your .qgis2 folder (ie, rename to .qgis2.backup)

 

Then relaunch QGIS 2.6 and test again.

 

What's the data storage format? Are they spatialite, postgis, shapefiles, etc?

 

 

 

Donovan

 

On Mon, Nov 24, 2014 at 9:14 PM, Brett Adams <badams at spinifexgeophysics.com.au> wrote:

Seems I spoke too soon.

Removing files from the Layer control takes an eternity

Tried uninstalling both 2.6 and 1.8 and reinstalling only 2.6 but this
doesn't seem to have helped.

ba


-----Original Message-----
From: qgis-user-bounces at lists.osgeo.org
[mailto:qgis-user-bounces at lists.osgeo.org] On Behalf Of Brett Adams
Sent: Tuesday, 25 November 2014 10:09 AM
To: tech at wildintellect.com; qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] 2.6 very slow to render

Thanks Alex

That made a significant improvement.  I can live with that.


brett



Try disabling/changing multi-threaded rendering. It may not work well on
your hardware.

Settings ->Options->Rendering

Thanks,
Alex

-----Original Message-----
From: Alex Mandel [mailto:tech_dev at wildintellect.com]
Sent: Tuesday, 25 November 2014 9:59 AM
To: Brett Adams; qgis-user at lists.osgeo.org
Subject: Re: [Qgis-user] 2.6 very slow to render

On 11/24/2014 05:51 PM, Brett Adams wrote:
> Hi Folks,
> Just upgraded from 1.8 to 2.6.
> 2.6 is amazingly slow in the render control and rerendering compared
> to
1.8.
> Almost unusable.
> 1.8 runs perfect. Fast, efficient, no complaints.
> This has to be local to my machine, otherwise no one would be using 2.6.
> Any recommendations on what settings I can check?    Running on W7-64.
>
> Thanks
>
> Brett  Adams
> Spinifex Geophysics
> 0438 861 974

_______________________________________________
Qgis-user mailing list
Qgis-user at lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

_______________________________________________
Qgis-user mailing list
Qgis-user at lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20141126/9b86bd2f/attachment.html>