ASTER v2 loses GPU acceleration on one workplace after monitor wakes from sleep

[davidfnf]

Hi everyone,
I'm David, and I'm running ASTER v2 on Windows 11 Pro 23H2 with an AMD Ryzen 7 5700G and an NVIDIA GeForce RTX 3060. I have three workplaces configured: the host uses the RTX 3060, while the other two use displays connected to the motherboard's integrated graphics. Everything works as expected until the monitors enter sleep mode.
When one of the secondary monitors wakes up, that workplace often falls back to Microsoft Basic Render Driver. Video playback becomes choppy, hardware acceleration disappears in Chrome, and applications like OBS report that no compatible GPU is available, even though Device Manager still shows both GPUs working normally. The host workplace is completely unaffected.
I've already disabled Fast Startup, turned off PCI Express Link State Power Management, updated both AMD and NVIDIA drivers, reinstalled ASTER v2, and tested with different DisplayPort and HDMI cables. Windows Event Viewer doesn't show any display driver crashes, and restarting only the affected workplace doesn't help. The only reliable workaround is rebooting the entire system.
Has anyone running a mixed iGPU/dGPU ASTER setup seen GPU acceleration disappear only on one workplace after the display wakes from sleep? I'm wondering if this is related to WDDM multi-session device assignment or if there's another setting I should check.

[gustyanxiety]

Has anyone successfully run ASTER v2 with a Ryzen APU + NVIDIA dGPU mixed-display setup on Windows 11 23H2/24H2 without this behavior? It would be useful to know whether this is a general ASTER limitation or a driver-specific issue.

[Dustin21]

Since restarting the individual workplace doesn't fix it, have you tried completely restarting the graphics subsystem using the Win + Ctrl + Shift + B shortcut, or using a utility like CRU (Custom Resolution Utility) to restart the driver (restart.exe) when the workplace wakes up? It would be interesting to see if forcing a driver reload recovers the hardware acceleration without needing a full system reboot.

[jasperwilde34]

This sounds more like a Windows/driver issue than an ASTER configuration problem. I'd also test with monitor sleep disabled for a while. If GPU acceleration never disappears unless the display enters sleep, that would strongly suggest the problem occurs during display reinitialization rather than workplace switching. It would be interesting to know whether anyone using only a discrete GPU (without the Ryzen iGPU) sees the same behavior.

[Lyriellee]

Does it speed cap out at a certain level?

[ilyacolton]

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