When users logon random VDA with UPM policy enabled , the "NVIDIA control panel" feature gets lost in desktop context menu and “NVIDIA Control Panel is not found” notification pops out. 

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1.Check NVIDIA control panel “InstallLocation” in template through powershell command:
get-appxpackage -name *nvidia*

2.Create GPO logon script and apply the script to target OU:
Add-AppxPackage -Register "C:\Program Files\WindowsApps\NVIDIACorp.NVIDIAControlPanel_xxxxxxxxxx\AppxManifest.xml" -DisableDevelopmentMode

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Problem Cause

NVIDIA had moved the guest OS drivers from standard driver model over to DCH (Declarative Componentized Hardware) driver model in GRID 15. With DCH driver model, the NVIDIA control panel is now a UWP (Universal Windows Platform) app. The NVIDIA control panel will be registered when end users profiles are being provisioned during log on. The account we used to install the 15.1 NVIDIA guest os drivers had the NVIDIA Control Panel installed. However, when logging into the desktop pool under another domain account, we'll receive “NVIDIA Control Panel is not found” toast notification.

Ref:https://www.vjonathan.com/post/dem-non-persistent-vdi-deployment-and-nvidia-control-panel-missing/