Card & Driver
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Card: NVIDIA RTX A4000
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Driver: 573.92
Issue Description
We have an issue with an RTX card on a Windows Server 2025 Standard Host and VM.
Problem
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RDS session runs in Hyper-V on Windows Server
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Hardware passthrough enabled so the card is used in the session (DDA)
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At random moments the display generates black areas in square parts of windows
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The application does not freeze; it is purely a graphical issue
If you minimize everything in the session using Windows + M and open it again, everything is fine again.
The issue occurs with at least all +/- 15 users and different machines in the (RDS) session and feels completely random.
Troubleshooting Already Performed
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Fan settings changed from ambient to performance, reducing temperature from ~60°C to ~35°C
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Tested different driver versions, including version 8
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RDP settings reset to default with automatic graphics quality
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GPOs adjusted on the local TS (Hyper-V VM)
System Specifications
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Windows Server 2025 fully updated
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Resources checked:
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CPU: ~5%
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Graphics: ~30%
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GPO Settings on the Terminal Server
To enable GPU usage in RDS, the following local GPO settings are applied:
Path:
Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Remote Session Environment\
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Use hardware graphics adapters for all Remote Desktop Services sessions → Enabled
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Use WDDM graphics display driver for Remote Desktop Connections → Enabled
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Configure H.264/AVC hardware encoding → Enabled
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Prioritize H.264/AVC 444 graphics mode → Disabled
Question
Do any of you have seen this issue before and maybe have seen a fix for this problem?
Thanks in advance!