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DougDavey's avatar
DougDavey
Copper Contributor
Aug 20, 2021

AutoCad on Azure Virtual Desktop NV48s_v3 - Flickering

We are currently testing AutoCad on Azure Virtual Desktop and have put in place the NV48s_v3 with 48 cores, 448GB memory and 4x GPUs. We wanted to give the testing the greatest chance possible.   E...
DougDavey's avatar
DougDavey
Copper Contributor
Aug 20, 2021

To be clear. This is not a performance issue.
The issue is present with 1 user on a 48 core server on a 1gbps internet connection.
This is an issue that only occurs when using a specific GPO setting and relates to the rapid raising and lowering of quality creating a flickering effect.
The actual performance of the application is fine.

  • Richard5831's avatar
    Richard5831
    Copper Contributor
    Mar 22, 2022

    DougDavey 

     

    Our users are reporting the exact same issue.

    We are using the NC8as_T4_v3 machines and see the flickering effect.

    This is with AutoCAD LT 2022, but also with IntelliCAD.

     

    For now we are disabling Hardware Acceleration in AutoCAD as per recommended here for Citrix environments:

    https://knowledge.autodesk.com/support/autocad/learn-explore/caas/sfdcarticles/sfdcarticles/AutoCAD-Performance-Recommendations-for-Citrix-XenApp.html

    I cannot say that it lowers the performance that much and I also see utilization of the Video Encode on the GPU in Task Manager inside the Azure Virtual Desktop Host.

    If we disable the GPO "Prioritize H.264/AVC 444 Graphics mode for Remote Desktop connections" we see a drop in performance and the Video Encode in Task Manager does not do any work any longer.

     

    Did you make any improvements on the situation?

     

     

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