Your system information

• Steam client version (build number or date): May 12 2017
• Distribution (e.g. Ubuntu): Archlinux
• Graphics driver version (run nvidia-settings): radv git, RX 480
• Gist for SteamVR System Information: https://gist.github.com/ChristophHaag/561bdce3e47eb5ee4aa87138d1cb4f29
• Opted into Steam client beta?: [Yes/No] Yes
• Opted into SteamVR beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Dota 2 VR Hub itself runs smoothly at 90 FPS without reprojection.
Only the controllers visibly stutter when you move them through the air. If I had to guess I'd say their position is only updated every second frame.
This doesn't happen in other SteamVR apps, just Dota 2 VR Hub.
I believe this has always been happening.