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Testing CPU monitoring with the new driver PawnIO

fpsVR · Community Announcements · May 07, 2026

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Testing in this format has been completed. Thank you to everyone who participated. Please return to the beta or public branch.

I'm asking YOU for help testing the new PawnIO driver, which will replace WinRing0. The new driver (PawnIO) is signed not only by the driver's author but also by Microsoft, which fundamentally changes the situation and will likely almost completely resolve the issue of antivirus software triggering on unsafe driver (WinRing0).

Why not just push the update to the beta branch? I decided to play it safe and do it in a more controlled manner.

Instructions:

1) Switch to the pawnio_cpu_monitoring branch (via the application properties in the Steam library), wait for the download to complete.

2) Launch SteamVR and fpsVR. Steam will likely request elevated privileges (administrator privileges) to update the CPU monitoring service files.

3) Quit fpsVR.

4) In the comments to this news, post the following message:

- your CPU model

- the text of the file Program Files\\fpsVR\\log.txt (this is the folder where the monitoring service is installed, not fpsVR itself). If the file is very long and there isn't enough space to show it in its entirety in the comments, no problem. Post the first part that fits and trim the excess from the end.

- if something didn't work correctly for you, describe the problem in your own words.

Thanks in advance to everyone who participates. I'll update this post once testing is complete.

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