As Rift Racer website seems to be gone, I figured I'd try and make a new go-to guide for improving your AC VR experience. This is geared towards enhancements and most commonly asked questions rather than performance optimisation or trouble starting the game in VR.
Resolution: 1920x1080 (Only affects the size of the virtual HUD, not the actual game rendering resolution)
Fullscreen Rendering: Enabled (improves performance and means that your mouse is always usable if your screen is higher resolution than set above)
Rendering Mode: Oculus Rift or OpenVR
Crepuscular rays: Off (bugged in VR - see known issues)
Fast Approximate Anti-Aliasing: Off (blurry)
Lock onboard camera to Horizon: Experiment to see what you prefer, can affect motion sickness, sense of elevation changes. I recommend RHM as it can give the best of both (see recommended mods section)
G-force effects*: 0.4x, 0.1x, 0.4x
Camera shake at high speed*: 0.2x
Display downshift protection notification: Off (immersion)
*These are down to personal preference. G-force and camera shake may contribute to motion sickness, and require the following parameter to be edited for them to be active in VR:
Pixel Density (PPD, SS)
Improves image quality, very demanding. 1.0 is default, increase in 0.1 increments. 1.4 seems a sweet spot.
Oculus: Set in Documents/Assetto Corsa/cfg/oculus.ini (or in Content Manager)
OpenVR: Set in OpenVR app in game, where you can also adjust IPD in Vive
Not a setting as such, but an important consideration, allows the game to be rendered at 45fps instead of 90fps and still feel fluid.
- You can increase graphics settings with the additional GPU headroom
In general, it is allowed by default, so if you are not achieving 90fps the game will fall back to 45 and use this technology to provide a smooth experience. I am using it as it allows me to run PP and 1.4 PPD on a GTX 970.
- Will introduce some artifacts but for games like AC they are not too bad.
- Some users find it less comfortable
Oculus: Oculus TrayTool lets you define profiles so that you can force ASW on or off per game, I find this useful.
Launcher in Headset
Oculus: The latest beta of Oculus software provides a virtual desktop, however it is still a bit buggy, try Bigscreen Beta. Beware that these will steal VRAM from the game. Virtual desktop is claimed to be better on CPU usage in the background (not free)
OpenVR: try SteamVR's Desktop Theater Mode
Audio Device Auto Select
Oculus: Set AUTOSELECT_RIFT_AUDIO_DEVICE=1 in Documents/Assetto Corsa/cfg/oculus.ini so that audio always goes to the Oculus instead of your windows default
OpenVR: try Audio app in game
You will probably want to find a method to bind keys to your wheel (e.g. JoyToKey or your wheel drivers), here are some likely to be useful:
Reset View: CTRL+SPACE (or bind ‘Look Left’ and ‘Look Right’ and press them together, however this is a waste of a button)
Hide/Show Apps: CTRL+H (or CTRL+U to cycle through "virtual desktops")
Natural Graphics Mod If you run PP On, provides much more believable visuals and saves ~10fps fps over the default filter. If you run PP Off, you should still benefit from the adjusted weather files which should have a more consistent brightness and balance. I see some people using gbW in VR but it was way too contrasty for me in Oculus. I will provide a filter that should go nicely with the gbW weathers next time I update my graphics mod. I've only tested it in Oculus but I've not heard anyone say its too bright or anything in the Vive, feedback would be welcome.
Real Head Motion Allows you to have a mix of locked to horizon and car and filter bumps.
My settings keep the car locked to horizon up to 10 degrees of pitch which gives good experience through normal and extreme (monza banking, eau rouge) situations:
Top/Center Flags for VR By default the flags are impossible to notice because they are in the top left corner of your virtual HUD which you never would be looking at.
Real display damage by Luc1gnol0 Much less intrusive than the default UI.
AC - Disable Shadows Patcher Not tested personally but seen several VR users recommend it. Shadows are pretty glitchy in AC VR, and I believe this yields a decent performance improvement. Modifies the game .exe file so use with caution, will be broken by game updates etc.
Toggle Overlay Learderboard: F9 (when in a race)
The Tweaks below will remove some of the persistent elements and low-importance server messages from your view so that you can have a fully immersive experience. You can display most of this information via apps which you can show/hide while driving.
Optimised Camera Position for all cars
This is what the files in the download are for. Low importance, just a method of ensuring your view is at a consistent distance to the driver model for all cars. The files included in the download go in: \Documents\Assetto Corsa\cfg\cars
and simply give the result of having gone through every single car and pressing "Auto-Pos" in the onboard settings app for every car, with some offset applied to move the view backwards and up slightly, hopefully your shoulders will line up much better with these files. More info: AC forum post
Known Issues with Assetto Corsa VR
- PP filter selection doesn't work: http://www.assettocorsa.net/forum/i...er-selection-does-not-work-minor-issue.34560/ (Content Manager has a workaround for this (on by default))
- Godrays broken: http://www.assettocorsa.net/forum/i...m-all-angles-rather-than-just-from-sun.34556/
- Ctrl+L display opponents is bugged: use realtime app or similar to determine player names
- Apps text difficult to read: Increase the size of the app with the arrow buttons
- Mirrors are not amazingly helpful, you could use Helicorsa although it is obviously preferable to have no apps visible when driving
- Replays are not VR friendly
- If you click on an opponents name in the entry list you´re teleported to that cars view with no button return to your car. Press F4
- Brake lights visibility is poor with PP off
- No gaze cursor
Assetto Corsa VR Guide 1.0
Tweaks and recommended mods to enhance your VR experience. NOT a performance optimisation guide.