If you are trying to change settings in NVIDIA Control Panel but can't save the settings, follow this post and apply these fixes to resolve the issue.

In the NVIDIA control panel, as well as in your game settings and Windows display adapter settings, make sure your screen resolution and the monitor refresh rate are set to the proper settings.

If NVIDIA Control Panel keeps crashing when accessing Manage 3D settings section on your Windows 11/10 PC, then use these fixes to solve it.

For example, if you want to check for the latest NVIDIA Control Panel software, simply open the application, click on Help, and click on About NVIDIA Control Panel.