- This topic has 8 replies, 2 voices, and was last updated Sep 12, 2025 1:27pm by
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I’m on the Pimax Crystal Super trying to use the Desktop Viewer / Virtual Monitor, but am having a couple problems:
-While it works, the resolution is clearly reduced. On a 4k desktop, it looks like it’s downsampled using a nearest neighbor filter down to maybe 1080 (I can see obvious aliasing on straight lines). It’s clearly displaying a poorer quality than something like SteamVR’s desktop view, I’m guessing this is some sort of bug.
-I’m on a 60Hz monitor and I can’t get Desktop Viewer to display the image at 90fps, even with vsync off in games with a high framerate. The in-game framerate will go that high, but the Desktop Viewer isn’t sampling it, it looks identical to capping it at 60 and I can tell it’s not as smooth as 90. Just to test, capping it at 30fps shows an obvious drop, so I think it’s not injecting properly.
Some things I’ve tried / noticed:
-When VorpX hooks into a game directly, it displays it at 90fps fine (same for full resolution), this is only an issue for running a game inside Desktop Viewer.
-When I try to launch Desktop Viewer through the system tray icon, nothing happens, but if I launch vorpDesktop.exe directly from the VorpX directory, then it will load.
-When trying to activate virtual monitor manually from the system tray, nothing seems to change. If it’s already running Desktop Viewer, does that mean it’s already active?
Resolution:
Disable foveated rendering in the Pimax app. Can’t test since I only have an older Pimax lying around here, but others reported that’s the source of the problem. Foveated rendering is not of much use with vorpX anyway since when hooked into a game most of the GPU heavy lifting is done by the game, not in vorpX’s own rendering thread where the foveated rendering gets applied.
Desktop viewer/virtual display:
Sounds suspiciously as if the vorpX service can’t perform its desktop viewer related tasks like it is supposed to on your system, which would prevent both the virtual display from kicking in and the desktop viewer from launching when trying that from the tray menu.
That may occasionally happen due to bug that can send the service into an infinite loop currently. Will be fixed in the next update. As a workaround restarting the service (or your PC) would help until then.
It can also happen if you are running your PC with dedicated admin/day-to-day user accounts, where the logged in day-to-day user user is never allowed to have admin rights. To use the virtual display as intended you’d have to change your Windows setup to default (i.e. the logged in user can obtain admin rights via Windows’ user account control if needed). If you don’t want to change that, you can still use the desktop viewer with your actual monitor like you currently do, of course.
If none of the above is your issue, try to reinstall vorpX if you haven’t tried that already. Just in case.
After a full reinstall, I still have the same problem. A few notes:
-I’ve had foveated rendering / quadview disabled since I don’t think I’m running any games that would support it (same goes for eye tracking)
-vorpX Service is running on startup, but from your description maybe something is interfering with it.
-When launching VorpX Desktop Viewer, I notice now the “disable virtual monitor” is greyed out in the system tray, despite “enable virtual monitor” being checked in the configuration settings.
-I think I read Virtual monitor is supposed to disable my existing monitor? That’s clearly not happening on my end. I even tried turning off my monitor while Desktop Viewer was enabled and it led to behavior where the previous desktop image was still on the screen and I could move the mouse cursor around, but none of my clicks registered.
Please let me know what else I should try to troubleshoot this.
Almost certainly related to interprocess communication between the vorpControl app and the service not working. If you aren’t onthe latest buld 25.1.2 yet, try that first.
If it’s still not working afterwards, check whether for some reason the service did not update by checking its version in the file properties windows. Has to be 25.1.2.0 for both vorpService.exe and vorpControl.exe.
Than it has to be some rights specific issue. Not quite sure what you meant by ‘admin account’. If that means that you have an admin account and a sescond account for day-to-use, it will not work.
You need to be logged in with a default Windows user account, which doesn’t have admin rights when logging in, but can get admin rights if necessary. Otherwise the service can’t do all it needs to do to handle the virtual monitor.
Also if you happen to run vorpX as admin, don’t. That’s only neccessary to hook games that require admin rights.
Besides that I’m out of ideas. You can however still use the desktop viewer like before vorpX 25.1.0 with your actual monitor.
By admin account I mean this:
I’m not running an additional account, it’s only this. Does that mean virtual monitor won’t work?
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