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Graphical glitching/jumping/stuttering in Half Life Alyx, anyone experiencing the same?

JetGJetG Posts: 3
NerveGear
Hi all,

just started playing Alyx and have noticed some terrible graphical jumping. The game looks incredible, but the immersion is really broken when the graphics glitch like this. Looking around seems fine most of the time, but head movement in 3d space causes the graphics to jump, as if it had lost a few frames (some tearing is present too, and some lateral movement of objects). Pretty sure it isn't a frame rate issue, but more a tracking issue or some error with the way Steam VR translates the data from the Rift maybe?

Anyone else experiencing a similiar issue with Alyx? It doesn't happen on Oculus games, nor have I noticed it with outher Steam VR games, seems something to do with the Rift and Alyx specifically. I've tried all the solutions I've found online regarding super sampling, disabling smoothing etc, but with little success. 

PC is a 3900X on a 570X, 1080ti, 32gb ram, original Rift with three cameras in a 10ft x 10ft space (mounted in the corners of the room). No tracking issues normally.

Any help would be gratefully received.

J
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Comments

  • dburnedburne Posts: 3,653 Valuable Player
    I am no help other than to say Alyx runs great on my end.
    Have you tried lower graphics settings?

    Don

    EVGA Z390 Dark MB | I9 9900k| EVGA 2080Ti FTW3 Ultra |32 GB G Skill 3200 cl14 ram | Warthog Throttle | VKB Gunfighter Pro/MCG Pro grip | Crosswind Pedals | EVGA DG 87 Case| Rift S | Quest |
  • RuneSR2RuneSR2 Posts: 5,569 Valuable Player
    No problems here at all using GTX 1080 and i7 7700k, but I'm using the Valve Index. 
    Intel i7 7700K (4.5 GHz); MSI GeForce GTX 1080 8GB Gaming X (oc 2100 MHz gpu boost, 11 GHz mem speed); 16GB Corsair Vengeance LPX DDR4 3200 MHz; MSI Z270I Gaming Pro Carbon AC (VR-Ready) mainboard; Samsung 960 Evo M.2 SSD + Toshiba P300 HD; Windows 10 OS; Valve Index and Oculus Rift CV1 - the latter nearly always using super sampling 2.0. 

    "Ask not what VR can do for you – ask what you can do for VR"
  • FlyinDranoFlyinDrano Posts: 6
    Brain Burst
    JetG said:
    Hi all,

    just started playing Alyx and have noticed some terrible graphical jumping. The game looks incredible, but the immersion is really broken when the graphics glitch like this. Looking around seems fine most of the time, but head movement in 3d space causes the graphics to jump, as if it had lost a few frames (some tearing is present too, and some lateral movement of objects). Pretty sure it isn't a frame rate issue, but more a tracking issue or some error with the way Steam VR translates the data from the Rift maybe?

    Anyone else experiencing a similiar issue with Alyx? It doesn't happen on Oculus games, nor have I noticed it with outher Steam VR games, seems something to do with the Rift and Alyx specifically. I've tried all the solutions I've found online regarding super sampling, disabling smoothing etc, but with little success. 

    PC is a 3900X on a 570X, 1080ti, 32gb ram, original Rift with three cameras in a 10ft x 10ft space (mounted in the corners of the room). No tracking issues normally.

    Any help would be gratefully received.

    J

    I have a similar rig to yours with a 2060. I've had issues with odd freezes like that. I'm a flight sim guy and when this happens I'm also getting odd commands coming through my HOTAS that I'm not sending. But yeah it's just like that when it happens. A little pause like it's dropped frames. It skews my tracking momentarily too. Didn't seem to be an issue until I built this new PC that's only a month old. Was driving me nuts! Certainly not a horsepower thing. I started unplugging peripherals thinking I had something flaking out. Thought my USB hub was going bad, Nope! Problem persisted with nothing plugged in. So that ruled out a peripheral. Thought my brand new Seasonic PSU was maybe not right but like that happens with that brand. Off to google this. Got nothing but time like near everybody else these days!

    Upon further review I read somewhere that if you are running certain monitoring programs like HWMonitor, AIDA64 or even MSI Afterburner It can cause conflicts with the Oculus software. Have fancy LED lights like I do in my pretty new rig? Well..apparently their programs, like the iCue I'm using, also tend to interfere with the Oculus software. Anything that is tied in to low level processes including motherboard lighting---like the Asus Aura my board has will make it glitch out. While I did run AIDA64 and AB in the background of my other PC, I didn't recall having this level of problem. But I didn't have any LED stuff on that one as it was kinda ancient c2011. So not sure if this would have happened all along if I'd had LED control going on in my old PC or if this is another feature from another oculus update.

    So..I went into the task manager and started disabling things one at a time. Went into a flight sim and just sat on the runway and waited for the glitch to happen. Sure enough It persisted just sitting there with my hands on the desk until I nuked almost all of those programs. AIDA64 was a central player here as some of the things that AB was monitoring got pulled from AIDA64.Can't say it's completely cured as I was really reluctant to kill off iCue completely as I have a Corsair CPU cooler and it's run thru iCue. But with the other programs killed the glitches are almost down to none as opposed to every couple of minutes or every few seconds at random.

    Hope this gives you a clue as to what might be going on. Had me scratching my head!
  • JetGJetG Posts: 3
    NerveGear
    Hi guys, thanks for replying. I put in a solid session last night, and just tried to ignore the glitching, but man it is annoying. Looking around online and it does seem like a Rift / Rift S to Steam VR issue, and it seems to be software related, not hardware (someone with a 9900K and a 2080ti was reporting the same issue). I have a G-Sync monitor so I tried disabling that incase there was something happening between the graphic drivers and Steam VR.....I felt like it might have helped a little bit but the still problem persists. I'll try fiddling with the in game video options and report back. I have a pretty minimialist PC with not many things running in the background (razer synapse, icue for the keyboard and AMD raid xpert 2), but these have never created problems before. Worth noting as well that I have a Inateck USB interface as well running a few of the sensors. Again, if it was hardware related it would happen on all games one would imagine.

    I studied the problem more ernestly last night, the best way to describe it is a 'flash' where 3D objects or the world will flash to a different (but close) location then flash back to correct position/location in an instant. Like a very quick loss or change in headset location then back to correct tracking. Definately doesn't happen where you are just looking around or rotating the headset on a fixed axis. The latest nvidia drivers seemed to help a little bit as well....although I don't know, along with the disabling of g-sync, if this is just psychosomantic.




  • JetGJetG Posts: 3
    NerveGear
    Tried everything I could to fix it, no success. I can only think that it is a glitch between my combination of hardware/software and Alyx. Hopefully updates will be released at some stage, either by nvidia, steam or Oculus. It is still playable and immersive, but man is it annoying. If anyone stumbles across this post and has an aswer, I'd love to hear from you!

    I may even contact steam and oculus support, see if they can weigh in on the matter.

    J
  • FullyverifiedFullyverified Posts: 1
    NerveGear
    edited June 1
    Hey JetG, just wondering if you ever found a solution to this problem? I currently experiencing it and haven't been able to find reference to it any where else.
  • bpaul1983bpaul1983 Posts: 2
    NerveGear
    I got my Oculus Rift S last week, started playing Half Life Alyx last night and am getting the same issues described in this thread. I don't have any RGB lighting or anything like that running, except on my Steelseries Apex Pro keyboard. I have no issues in other VR games, although so far I have only played Pistol Whip and Superhot VR and those run great. 

    I'm running an i5 9400F, RTX 2060 6GB, and 16GB RAM - should be fine specs-wise, right? 
  • adam.poole.313adam.poole.313 Posts: 170
    Art3mis
    edited June 9
    Lots of people are reporting this kind of poor performance in Alyx, whereas it played pretty smooth at launch. Something got screwed up either in a Steam update, SteamVR update, or Alyx update. The theory is that it is caused by the way, by default, the game attempts to scale fidelity dynamically depending on GPU load. Apparently when it adjusts fidelity it is causing loss of frames. The solution is to fix the fidelity level to a specific number at launch. So try this:

    Right click the game in your Steam library, then go to "properties" and "set launch options". Paste the following:

    -novid -console -vconsole +vr_fidelity_level_auto 0 +vr_fidelity_level 3 +vr_render_scale 1.15


    If that fixes your problem then you can increase the fidelity level (fidelity_level 4, 5, etc... up to 8) up until performance suffers.
    Oculus Rift S, CV1
    Intel i7-8700K
    ASUS ROG Maximus X Hero
    16GB DDR4 x 2
    4 TB SDD, 2 TB SSD, 1 TB SSD
    Windows 10 Home
  • VROne3DVROne3D Posts: 25
    Brain Burst
    Has anyone overclocked their RAM or CPU?... out of curiosity. So, did you build the PC yourself.
  • GoneVRGoneVR Posts: 19
    Brain Burst
    edited June 15
    Same situation. Alyx is unplayable now. Few days ago it works great on high fidelity, now it lags a lot even on low fidelity. I can see all games on steam vr have stuttering/micro lags now. Maybe steam vr update causes the problem? Oculus update?

    Nothing changed on my PC rig.

    6600K @4.5GHz, 2x8GB DDR4 2666, 2080 Super, Asus Maximus ranger with newest BIOS. Fresh install of win10 on SSD.
  • NxckPlaysNxckPlays Posts: 1
    NerveGear
    I'm not sure why but the same thing is happening to me. It's "sort of" playable, but every few seconds I get a hang or a stutter that lasts anywhere from 20-250ms, and It's really taking away from the immersion. I'm surprised I don't hear more about this, my rig is a 3600X with a 2070 Super and 32GB of RAM. I have no idea what could be causing this, ran fine on my old PC at launch but I took a break for a while from the game and came back with a whole new PC and suddenly It's a stuttery mess. 
  • exis.zaexis.za Posts: 1
    NerveGear
    edited June 26
    I've been having the exact same issue for over a month. The frame "jumps" or "flickers" randomly when moving in 3D space but not when standing still. I've tried everything including opening a ticket with SteamVR and I've just given up hope of ever being able to play the game again properly : '(

    It seems like some kind of bug at a low level between SteamVR and Oculus, the only clues I have is that it doesn't appear on any performance timing graph on SteamVR or Oculus Diagnostics, and it is worse when raising the fidelity level of the game, but it also occurs even on the lowest settings.
  • dburnedburne Posts: 3,653 Valuable Player
    Hmm haven't played Alyx since I finished it a few weeks ago, ran great for me then at highest of settings.
    If I get a chance tomorrow will have a look and see if I see a difference.
    Don

    EVGA Z390 Dark MB | I9 9900k| EVGA 2080Ti FTW3 Ultra |32 GB G Skill 3200 cl14 ram | Warthog Throttle | VKB Gunfighter Pro/MCG Pro grip | Crosswind Pedals | EVGA DG 87 Case| Rift S | Quest |
  • TomCgcmfcTomCgcmfc Posts: 2,261 Valuable Player
    I just started playing this today with my Rift cv1.  Everything looks fantastic and is very smooth.

    Custom built gaming desktop; i9 9900k (water cooled) oc to 5ghz, gtx 1080 ti, 32 gb 3000hz ram, 1 tb ssd, 4 tb hdd.  Asus  ROG Maximus xi hero wifi mb, StarTech 4 port/4 controller sata powered usb3.0 pcie card, PCI-E PCI Express to USB 3.1 Gen 2 card, Asus VG248QE 1080p 144hz gaming monitor, Oculus Rift cv1 w/2x sensors, Vive Pro w/2.0 base stations/controllers, Quest w/Link and VD wireless (good/close 5Ghz wifi and PC with Ethernet cable to my Router).

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