Customer deployed the latest version of Linux VDA, but after operating the Linux VDA for one day, there will be a delay when dragging windows or entering or deleting text.

The users is used 3D Pro single session desktop. Only reboot the VM could fix the issue.

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This is Nvidia unlicensed driver limitation.

After 24 hours, the frame rate will be capped at 3 frames. So the Linux VDA graphic will be effected. 

When a Virtual Machine (VM) that is running NVIDIA vGPU software is first booted, the virtual GPU or physical GPU assigned to the VM operates at full capability. When licensing is enforced through software, the performance of the virtual GPU or physical GPU is degraded over time if the VM fails to obtain a license.

How the performance of an unlicensed vGPU or physical GPU is degraded depends on how much time has elapsed since the VM was booted and the NVIDIA vGPU software graphics driver was loaded.

Customer needs to contact Nvidia support to active the license for vGPU.

Customer deployed 3D Pro Linux VDA with Nvidia vGPU.

But end users complained that the operational smoothness of the desktop began to decline after 1 day of running the desktop.