VR issue (VIVE PRO)

[Iamisti]

Hi guys,

I've recently discovered an odd behavior.
I own an HTC VIVE PRO device which is a fairly new device, has a higher resolution than other VR devices (oculis and vive).
I've tried many games with my VIVE PRO, like project cars 2, asetto corsa, etc..
I had no issues with any other games, but unfortunately there is something wrong in iRacing when I'm using my VR.

The issue is the following:
- I have strong and consistent 90 fps in the game (which is not an issue, just important to mention)
- When I move my head up and down, the whole world is moving with me a bit. Not as much as my head moves but let's say around 1/8th ratio, which makes me sick in 10 minutes playing with it.

In any other games, the tracking works perfectly, there is no weird behavior like the one mentioned above.

Do you have any solution to fix this issue, or are you aware of this problem in your game?
Any suggestion how I can fix it, or when a potential fix will come out (in case it's a known issue)?

I'm very fustrated, tried every possible tweaks and setups in the game and with the VIVE, with my usb ports, video card, no success. Reinstalled windows, nvidia driver, problem still persist.

My Specs:
- Intel Core i7 6700 (LGA 1151, 3.40GHz)
- ASUS Z170 Pro Gaming (LGA 1151, Intel Z170, ATX)
- SAMSUNG PRO SSD 500GB
- ASUS GeForce GTX 1080 Ti STRIX O11G-GAMING (11GB)
- HyperX Fury (4x8GB, DDR4-2133, DIMM 28

I have set the resolution to 1980x1080 in iRacing. (what is the best resolution for vive pro?)

Trying to fix it for a couple of days already without success. This forum post is my last hope.

[Jbark51]

You will get much better responses and answers from the actual iracing forum. There is a section dedicated to VR help. The steam forum is 99% trolls.

[TR_CyberRacer]

sent a freind request Iamisti. I too am seeing the same thing just enough to make the Vive Pro not fun in iRacing. Its awesome in XP11 but anyway have you found a solution for this? iRacing forums are of no help niether is google.

[Litva]

Its Iracing not updating they software. Roll back on nvidia drivers will fix the issue.
368.00 something even that far.

[CptJack[DFUE]]

Sounds a bit like the issue I am facing with iRacing. I posted on the forum and the subreddit:

* http://members.iracing.com/jforum/posts/list/3613505.page
* https://www.reddit.com/r/iRacing/comments/969v4b/stuttering_of_vrtracking_under_windows_10_vive_pro/

[Iamisti]

Guys, I found out something.
In steam VR the basic settings set the pixel density to 130%
Also in iRacing, they have a configuration file that sets the pixel density to 130% as well

Now the problem is, these settings not overriding each other, but adding up! So you would end up with an incredibly high pixel density.

Fix:
Try to change steam VR to 100%, and change iracing configuration for vive to 125% or 120%.

Solved for me.

[CptJack[DFUE]]

Was your problem related to FPS or tracking? Because mine is tracking. The fps is as usual. Only the tracking doesn't work as it should.

Edit: But nice, that it resolved a problem for you. I'm currently loading the Season 4 update and hope the best.

[Iamisti]

i had both problems. I had oculus before, that was sooo smooth in tracking. With VIVE Pro, i think it didn't improve a lot, but it got better. Maybe because of the firmware updates, i don't know.
Also i might got used to it, but it's definitely worse than oculus... still. But playable.

[CptJack[DFUE]]

OMFG, I resolved my problem. Since the Vive Pro was causing a resource problem on my MoBo-USB, I bought a PCIe-USB-card, but not the recommended one (Inateck with FL1100 chipset). I tried so much and I really thought I already tried using the Vive on a different USB-port, but it seems I didn't.

So yesterday, in an act of desperation (I thought I already tried it), I put the Vive on the MoBo-USB and moved my Fanatec wheel base and button boxes on the PCIe-USB-card. BÄHM, tracking working. But now, I had problems with my wheel, for which iRacing seemed to not receive input from time to time. That indicated something between the PCIe-USB-card and iRacing didn't work. Put the wheel on MoBo-USB and everything worked fine.

To me, this is a bit weird, because I only had tracking-problems in iRacing. All other VR-titles, from other sims, like Assetto Corsa to pCARS to Onward, to Virtual Rickality, to Google Earth VR, just worked fine. Maybe it's the way iRacing is communcating with USB-devices.

I just ordered the recommended Inateck with FL1100 chipset, but 4 port. Let's see. Holymoly, after 6 weeks...

[Iamisti]

did you get this one? https://www.inateck.com/inateck-ktu3fr-4p-usb-3-0-pci-express-karte-mit-4-usb-3-0-ports.html

[CptJack[DFUE]]

I think that's the one I ordered now to replace the one, that doesn't work well with iRacing / Vive Pro.

[diGitaL]

i have the same Problem. Bought the Vive pro and the world is moving when i am turning my head….

Tryed another USB Port..doesnt helped me.

HAve anybody a idea?

[Will]

anybody get this fixed? have the same issue. world shifts/lags around as soon as iracing starts. before the program is running VR is smooth no lag. But as soon as iracing finishes loading and launches the tracking seems to lag slightly, the game, the room bounds and the steam dashboard all drift behind a bit. Randomly started happening, no new drivers.

[DonPromillo]

I think i have solved it!

RenderDX11.ini is in documents Folder:\Iracing

[Oculus Rift]
MirrorViewVerticalShiftPct=0 ; -30 to +30 percent - shifts the mirror image up/down (if clipped)
RiftEnabled=0 ; Enable Oculus Rift Support
PixelsPerDisplayPixel=100 ; (50% to 300%): 125%=1.25, over 100% may hurt performance!
TwoStageAA=1 ; Repeat AA after the UI draws (note: consumes more vid mem)
FullyWaitForSync=0 ; Improves timing/lag below refresh rate, but costs a little all of the time
AutoSelect=0 ; Use Rift, if detected, without prompting
AutoCenter=0 ; Re-center the HMD pose when health/safety warning disappears
PrevVirtualMirrorWidth=1124 ; System use only -> do not edit...
PrevVirtualMirrorHeight=216 ; System use only -> do not edit...

[OpenVR]
OpenVREnabled=1 ; Enable OpenVR Support
TwoStageAA=1 ; Repeat AA after the UI draws (note: consumes more vid mem)
AlignmentFix=3 ; 0=off, 1=simple (SPS), 2=simple (always), 3=advanced (SPS)
MirrorViewVerticalShiftPct=0 ; -30 to +30 percent - shifts the mirror image up/down (if clipped)
PredictionMode=2 ; 0=off, 1=dynamic, 2=fixed
FullyWaitForSync=1 ; Improves timing/lag below refresh rate, but costs a little all of the time
AutoSelect=1 ; Use OpenVR without prompting (note: Oculus has priority if enabled)
AutoCenter=0 ; Re-center the HMD pose when health/safety warning disappears

[Sighman]

Not sure whether this is helpful or not, but I used this guide to dramatically improve my framerates on a regular triple screen setup.

iRacing VR Optimization Guide

https://members.iracing.com/jforum/posts/list/3657185.page

[-CDN- redhq]

Probably too late for OP but for anyone else searching I had this exact issue and was able to fix it.

Go into your .ini file and change cockpitLookAngle, cockpitLookDownAngle, and cockpitLookUpAngle to 110 degrees.

Change cockpitLookDeadZone, and cockpitLookSmoothingTime to 0.

What I believe is happening is that when you look using VR the game tries to "smooth out" your head turn effectively slightly moving the world with your head or its triggering since our of bounds logic.