Le portail francophone de la géomatique

Bonsoir,

Creusez du côté des profils utilisateurs : https://docs.qgis.org/3.34/fr/docs/user … r-profiles
Peut-être en supprimant votre profil actuel dans le dossier correspondant (vous pouvez en garder une copie ailleurs).
Sous Windows ça doit être dans %AppData%\Roaming\QGIS\QGIS3\profiles\

Ou alors il est possible d'utiliser l'option -P ou --noplugins en ligne de commande pour lancer QGIS sans plugin.

Liste des options pour la version 3.32 (récupérée en lancant

qgis-bin.exe --help

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QGIS command line options
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QGIS is a user friendly Open Source Geographic Information System.
Usage: C:\Program Files\QGIS 3.32.2\bin\qgis-bin.exe [OPTION] [FILE]
  OPTION:
    [-v, --version]    display version information and exit
    [-s, --snapshot filename]    emit snapshot of loaded datasets to given file
    [-w, --width width]    width of snapshot to emit
    [-h, --height height]    height of snapshot to emit
    [-l, --lang language]    use language for interface text (changes existing override)
    [-p, --project projectfile]    load the given QGIS project
    [-e, --extent xmin,ymin,xmax,ymax]    set initial map extent
    [-n, --nologo]    hide splash screen
    [-V, --noversioncheck]    don't check for new version of QGIS at startup
    [-P, --noplugins]    don't restore plugins on startup
    [-B, --skipbadlayers]    don't prompt for missing layers
    [-C, --nocustomization]    don't apply GUI customization
    [-z, --customizationfile path]    use the given ini file as GUI customization
    [-g, --globalsettingsfile path]    use the given ini file as Global Settings (defaults)
    [-a, --authdbdirectory path] use the given directory for authentication database
    [-f, --code path]    run the given python file on load
    [-F, --py-args arguments]    arguments for python. This arguments will be available for each python execution via 'sys.argv' included the file specified by '--code'. All arguments till '--' are passed to python and ignored by QGIS
    [-d, --defaultui]    start by resetting user ui settings to default
    [--hide-browser]    hide the browser widget
    [--dxf-export filename.dxf]    emit dxf output of loaded datasets to given file
    [--dxf-extent xmin,ymin,xmax,ymax]    set extent to export to dxf
    [--dxf-symbology-mode none|symbollayer|feature]    symbology mode for dxf output
    [--dxf-scale-denom scale]    scale for dxf output
    [--dxf-encoding encoding]    encoding to use for dxf output
    [--dxf-map-theme maptheme]    map theme to use for dxf output
    [--take-screenshots output_path]    take screen shots for the user documentation
    [--screenshots-categories categories]    specify the categories of screenshot to be used (see QgsAppScreenShots::Categories).
    [--profile name]    load a named profile from the users profiles folder.
    [-S, --profiles-path path]    path to store user profile folders. Will create profiles inside a {path}\profiles folder
    [--version-migration]    force the settings migration from older version if found
    [--openclprogramfolder]        path to the folder containing the sources for OpenCL programs.
    [--help]        this text
    [--]        treat all following arguments as FILEs

  FILE:
    Files specified on the command line can include rasters, vectors,
    QGIS layer definition files (.qlr) and QGIS project files (.qgs and .qgz):
     1. Rasters - supported formats include GeoTiff, DEM
        and others supported by GDAL
     2. Vectors - supported formats include ESRI Shapefiles
        and others supported by OGR and PostgreSQL layers using
        the PostGIS extension

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OK   
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Bonjour,

Une autre origine de ralentissement de Qgis peut-être l'existence de point de montage réseaux non accessibles lors du lancement de l'appli (montage réseaux au niveau de l'OS).

A tester ?

Bonne journée.