It seems a few months after my post, a new feature was added to windows 10 (also 11) called " Hardware-Accelerated GPU Scheduling ."
When this feature is on, CUDA is not visible as one of the dropdown menu options in GPU tab in Task Manager (Source). Thus, turning off this feature by following these steps (in windows 11) will probably return CUDA back to Task Manager:
- Open Windows Setting > System > Display> Graphics
- Select Change default graphics settings
- Turn off " Hardware-Accelerated GPU Scheduling ."
- Reboot the system.
Note: These steps might be different in windows 10. Googling will easily show you how to turn it off.