Rift Judder and FPS discussion thread.

Heavy judder in RES sites - yes or no


  • Total voters
    35
  • Poll closed .
It's hard to give advice since Oculus themselves have admitted a "CPU spiking" problem with SDK 0.4.3: https://forums.oculus.com/viewtopic.php?f=37&t=16287

make sure that the Oculus USB adaptor is plugged into a wall socket (especially for head-tracking problems)

Curious why you think this would help? All that does it provide power to the USB hub built into the Rift. It does not power the camera according to the docs.

Unless they are wrong? or undocumented feature?

Thanks
 
I get this too with a Radeon 7970. When I'm in an asteroid field it's pretty awful actually, even with low settings. It's quite bad in stations but just flying around outside of those two environments I don't notice it.
 
Curious why you think this would help? All that does it provide power to the USB hub built into the Rift. It does not power the camera according to the docs.

Unless they are wrong? or undocumented feature?

Thanks
I see why you would be skeptical but I had remembered seeing lots of posts about this especially when the DK2 first came out so I did a search:
http://www.reddit.com/r/oculus/comments/2dn5te/judder_caused_by_camera_solved/
http://www.reddit.com/r/oculus/comments/2g6hfq/fixed_jittery_image_with_dk2/

Perhaps it was coincidental since I can't seem to find any official comment on the matter but I am very curious now :)
 
I see why you would be skeptical but I had remembered seeing lots of posts about this especially when the DK2 first came out so I did a search:
http://www.reddit.com/r/oculus/comments/2dn5te/judder_caused_by_camera_solved/
http://www.reddit.com/r/oculus/comments/2g6hfq/fixed_jittery_image_with_dk2/

Perhaps it was coincidental since I can't seem to find any official comment on the matter but I am very curious now :)

Well interesting! Thanks. I'll keep it plugged in now and see what happens.

Cheers
Tim

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Did you disable VSync ? My monitor is 60mhz, that made a huge difference for me.

Hmm, I can't disable Vsync as it is in Red.

When I tried my GTX580's (sli disabled) and moved the Rift to the second card, then I was able to adjust those settings (all unlocked).

I suspect that when sharing a card with a desktop monitor and the rift (extended mode), it locks them down.
 
Well then lucky for you. Put this in google: Gigabyte N970IXOC-4GD
Thanks man, I went and ordered it, should arrive in few days.
In the mean time I messed with the graphical settings and managed to have somewhat non juddering play by turning a lot of things to off or low.
 
Thanks man, I went and ordered it, should arrive in few days.
In the mean time I messed with the graphical settings and managed to have somewhat non juddering play by turning a lot of things to off or low.

Cool idea..... I've got a GTX970 and have the same issue you have,,,, nice and smooth moving my ship around but micro jitters when moving my head,,,, seems more like a tracking issue too me, I tried moving my USBs to USB3.0 ports with no difference though...
 
Cool idea..... I've got a GTX970 and have the same issue you have,,,, nice and smooth moving my ship around but micro jitters when moving my head,,,, seems more like a tracking issue too me, I tried moving my USBs to USB3.0 ports with no difference though...

Hi tucker,

I've got the same GPU as you - but no micro jitters. Does this happen every time you move your head (eg in space) or only at certain times/places (eg in a station/hangar). What in game graphics preset have you chosen?

You may have already done this - but have you installed Afterburner and watched your FPS within the DK2?

By micro stutters do you mean little and frequent white flashes? This is a bit of a long shot but is your PC using hyperthreading? You can check in task manager to see how many cores its monitoring (normally I believe its 4 or 8)

Regards
Mark
 
Things I had to do in order to get the DK2 to work properly:

10 port Powered USB hub: The Rift and the Tracker are plugged into this
Disabled hyperthreading: Done in the BIOS
Bought a GTX 980
Bought a 144mhz monitor
In the NVIDIA control panel, set Max pre-rendered frames to 1

There are a few other things that I cannot think of off hand, and currently have my workstation completely disassembled.
 
Hi tucker,

I've got the same GPU as you - but no micro jitters. Does this happen every time you move your head (eg in space) or only at certain times/places (eg in a station/hangar). What in game graphics preset have you chosen?

You may have already done this - but have you installed Afterburner and watched your FPS within the DK2?

By micro stutters do you mean little and frequent white flashes? This is a bit of a long shot but is your PC using hyperthreading? You can check in task manager to see how many cores its monitoring (normally I believe its 4 or 8)

Regards
Mark

Mark, Cheers

Happens all the time, even on low settings, so I thought it was a tracking issue than an FPS problem, I've made sure it only uses the rift screen when turned on and not the monitor as an extended desktop.

All 8 cores are up and running, and the screen is not flashing just doesn't seem to keep up with head movements.

I'll have another go tonight, I'll try adding the power supply to the rift and I think I have an old head tracker software on the PC I'll remove..also I'll keep an eye on the FPS..
 
Mark, Cheers

Happens all the time, even on low settings, so I thought it was a tracking issue than an FPS problem, I've made sure it only uses the rift screen when turned on and not the monitor as an extended desktop.

All 8 cores are up and running, and the screen is not flashing just doesn't seem to keep up with head movements.

I'll have another go tonight, I'll try adding the power supply to the rift and I think I have an old head tracker software on the PC I'll remove..also I'll keep an eye on the FPS..

I run mine on low too, so I think you are right and FPS is a red herring (if nothing else works probably still worth installing some sort of FPS monitoring software just to check you are hitting on average 75fps).

There have been 3 or 4 of us in the past who have had a head tracking problem linked to Hyper threading being on. You mention all 8 cores working which suggests you do to (I had to go back to 4 on my rig). It only takes two mins to turn it off in the BIOS on boot up and it will give an obvious result ;)

For trouble shooting the idea mentioned above of plugging in the DK2 external power supply was a good one also. I believe the theory is - if the PSU is struggling it gives a little boost.

Good luck mate
Mark
 
Hmm, I can't disable Vsync as it is in Red.

When I tried my GTX580's (sli disabled) and moved the Rift to the second card, then I was able to adjust those settings (all unlocked).

I suspect that when sharing a card with a desktop monitor and the rift (extended mode), it locks them down.

I am sharing 2 monitors and the Rift on 1 card. The place i disabled this was in the NVidia control panel, not in the game.

Hope it helps.
 
I run mine on low too, so I think you are right and FPS is a red herring (if nothing else works probably still worth installing some sort of FPS monitoring software just to check you are hitting on average 75fps).

There have been 3 or 4 of us in the past who have had a head tracking problem linked to Hyper threading being on. You mention all 8 cores working which suggests you do to (I had to go back to 4 on my rig). It only takes two mins to turn it off in the BIOS on boot up and it will give an obvious result ;)

For trouble shooting the idea mentioned above of plugging in the DK2 external power supply was a good one also. I believe the theory is - if the PSU is struggling it gives a little boost.

Good luck mate
Mark


When you guys talk about hyper threading, is this only for intel processors? I have an AMD and I haven't seen anything like it in BIOS
 
At the risk of being a techno-simpleton, is your DK2 on tightly enough. If it's slightly loose I get the same effect, I just tighten the straps to stop it. I presume when it's loose your face moves slightly and then the mask follows creating the jitteriness.
 
When you guys talk about hyper threading, is this only for intel processors? I have an AMD and I haven't seen anything like it in BIOS

Sorry, yes I believe you are correct. I picked up on the problem TUCKER was having and after he mentioned 8 cores thought he had Intel.
 
When you guys talk about hyper threading, is this only for intel processors? I have an AMD and I haven't seen anything like it in BIOS

Yea.. I presumed an intel processor as well. In this case, try assigning the OVR services to a specific core to see if that helps.
 
I found this blog post about windows 7 core parking causing issues with micro-stutter and how to disable it.
http://www.techpowerup.com/forums/threads/windows-7-micro-stutter-fix-core-parking.159864/

I will have to test it out later when i get back from work and hopefully its the culprit. As it's definitely only affected with the head tracking.

If i look dead straight and fly the ship around the station, it's smooth sailing and no stutter at all, BUT if I try to look around there is a micro-stutter and it's not a loose DK2 on my head :)
 
Holy thargoid! I managed to reduce te micro-stutter during head movement by going in the Power option in Windows 7 and switching from balanced to High performance.

It has to do with the core parking! There is still a small stutter but it's reduced by quite a lot!
 
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