nvidia-settings --load-config-only does not load user settings upon login

1. Release of Ubuntu | lsb_release -rd
Description: Ubuntu 20.04.2 LTS
Release: 20.04
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2. Version of Package | apt-cache policy nvidia-settings
nvidia-settings:
  Installed: 460.39-0ubuntu0.20.04.1
  Candidate: 460.39-0ubuntu0.20.04.1
  Version table:
 *** 460.39-0ubuntu0.20.04.1 500
        500 http://se.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     440.64-0ubuntu1 500
        500 http://se.archive.ubuntu.com/ubuntu focal/main amd64 Packages
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3/4. Expected and Desired results
I expect my colour settings to be preserved and loaded between reboots/logins. While they are saved, they are not automatically loaded. Have to run nvidia-settings manually after login to load them.

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My own comments:

I run Ubuntu 20.04, with the latest updates as of today. Clean install.

I have changed some settings in nvidia-settings (the gui panel - see image) and changed the color settings, so that the brightness and contrast is lower on all channels. These settings are saved to a nvidia-settings-rc file in my home directory.

I noticed that there already is a startup script running this (/etc/xdg/autostart/nvidia-settings-autostart.desktop), buuuuuut it does NOT apply these settings upon login after gdm(3).

To fix it I changed a line from:
Exec=sh -c '/usr/bin/nvidia-settings --load-config-only'

To:
Exec=sh -c 'sleep 1 && /usr/bin/nvidia-settings --load-config-only'

Now my settings are applied upon logging in (albeit after 1 second).

I have tried other solutions suggested in forums such as running "nvidia-settings --load-config-only" in xinitrc and Xsession, as well as gdm3/PostLogin. They did not work, and I think that there simply needs to be some sleep/timeout time before loading the settings. Why? I don't know.