sometime we can not see the cuda usage in the taskmgr

we can disable the “accelerated GPU scheduling”

Have had this problem for a while, once had CUDA in the Task Manager -> GPU 0 -> Graph dropdown menus, then disappeared.

The solution for me is to go to Settings -> System -> Display -> Graphics settings (down the bottom of page) -> Hardware-accelerated GPU scheduling -> Switch to “Off”.

系统->屏幕设置->显示->显示设置->硬件加速GPU计划

系统->屏幕->显示卡->默认图形设置->硬件加速GPU计划

After reboot the CUDA option had returned to the graphs in the Task Manager GPU window.

document in msdn: https://docs.microsoft.com/en-us/windows-hardware/drivers/display/accelerated-gpu-scheduling