Compatibility Report

• Name of the game with compatibility issues: multiple
  • Hotdogs, Horseshoes, and Hand Grenades
  • Superhot VR
  • Many other VR games that support the new Index Controllers, with the notable exception of Pavlov
• Steam AppID of the game: multiple
  • 450540
  • 617830
  • etc

System Information

• GPU: nVidia GeForce GTX 1070
• Driver/LLVM version: nVidia 418.52.18
• Kernel version: 5.2.5-arch1-1-fsync
• Link to full system information report as Gist: https://gist.github.com/tizzir/4b8c9846bab16ca8570f0e0a3216e766
• Proton version: 4.11-1

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

Symptoms

As soon as a VR controller is connected while the SteamVR application is running on Proton, the application suffers from significant frame drops on a consistent interval. If the application is started without any controllers connected, the stuttering does not occur.
Stutter pattern looks like this:

Reproduction

1. Start affected application without any controllers connected
2. Look at the SteamVR frame timing graph, notice no significant frame drop
3. Turn on a SteamVR controller (HTC Vive wand and Valve Index controller has been confirmed to be affected)
4. Note the pattern of frame drops in the frame timing graph

steam-450540.log