Question / Help Very odd intermittent stuttering

[Draco]

I normally try to work any problems myself, but it has been quite some time with this ongoing issue and I'm at my wits end with not being able to resolve this.

Issue: Video skips/stutters, seemingly at random with no signs of cause. OBS 32 and 64. FPS counter doesn't budge under 30 when set to 30, same with 60, no dropped frames, CPU isn't stressed, GPU isn't stressed. Seen on the live view and on the actual stream. Local recording also shows the same. So it shows pretty much everywhere on any capture card.

Video examples explain/show it best. I used a simple 3rd person camera pan in Rise of the Tomb Raider on the Xbox One to show off the stuttering.

Example 1: https://dl.dropboxusercontent.com/u/26757/VisionRGB-E1s 2015-12-16-1405-14.mp4
- VisionRGB E1s - Seek to ~23s in to see the skipping.

Example 2: https://dl.dropboxusercontent.com/u/26757/C985 2015-12-18-0300-39.mp4
Log: http://pastebin.com/52VQ6C2r
- AverMedia Live Gamer HD (C985)

Things I've tried (in no specific order):
- Multiple capture cards
- Tested 2 different GPU's (GTX 480 & GTX 670)
- Enabled/Disabled Speedstep/EIST
- Unparked CPU's
- Enabled & Disabled HPET
- Windows & BIOS power management settings (Limited/Disabled C-states, adjusted/disabled performance mode)
- 2 different motherboards (Gigabyte GA-7PESH3 and now a ASRock EPC602D8A)
- Tested in Windows 8.1; Fresh Win7 & Win10
- Swapped around PCIe card placement
- Punched a wall

Yet this issue still persists after all the tinkering I've done. Maybe I'm just going nuts?

General Machine Specs:
ASRock EPC602D8A
Intel Xeon E5-2670 @ 2.6 Ghz (8 core)
MSI GTX 480 / eVGA GTX 670
Corsair 16 GB DDR3-1600
Datapath VisionRGB E1s & E2
AverMedia Live Gamer HD

Let me know if I left anything out or if you would like me to test anything in particular. I'm all ears!

 

[dping]

I normally try to work any problems myself, but it has been quite some time with this ongoing issue and I'm at my wits end with not being able to resolve this.

Issue: Video skips/stutters, seemingly at random with no signs of cause. OBS 32 and 64. FPS counter doesn't budge under 30 when set to 30, same with 60, no dropped frames, CPU isn't stressed, GPU isn't stressed. Seen on the live view and on the actual stream. Local recording also shows the same. So it shows pretty much everywhere on any capture card.

Video examples explain/show it best. I used a simple 3rd person camera pan in Rise of the Tomb Raider on the Xbox One to show off the stuttering.

Example 1: https://dl.dropboxusercontent.com/u/26757/VisionRGB-E1s 2015-12-16-1405-14.mp4
- VisionRGB E1s - Seek to ~23s in to see the skipping.

Example 2: https://dl.dropboxusercontent.com/u/26757/C985 2015-12-18-0300-39.mp4
Log: http://pastebin.com/52VQ6C2r
- AverMedia Live Gamer HD (C985)

Things I've tried (in no specific order):
- Multiple capture cards
- Tested 2 different GPU's (GTX 480 & GTX 670)
- Enabled/Disabled Speedstep/EIST
- Unparked CPU's
- Enabled & Disabled HPET
- Windows & BIOS power management settings (Limited/Disabled C-states, adjusted/disabled performance mode)
- 2 different motherboards (Gigabyte GA-7PESH3 and now a ASRock EPC602D8A)
- Tested in Windows 8.1; Fresh Win7 & Win10
- Swapped around PCIe card placement
- Punched a wall

Yet this issue still persists after all the tinkering I've done. Maybe I'm just going nuts?

General Machine Specs:
ASRock EPC602D8A
Intel Xeon E5-2670 @ 2.6 Ghz (8 core)
MSI GTX 480 / eVGA GTX 670
Corsair 16 GB DDR3-1600
Datapath VisionRGB E1s & E2
AverMedia Live Gamer HD

Let me know if I left anything out or if you would like me to test anything in particular. I'm all ears!

can you explain what exactly you are trying to do with two capture cards at the same time? also what other software you are running? I see you are using something with xsplit for audio.

I just want to understand how you can simplify your setup.

Are you using both capture cards at the same time?

 

[Draco]

Thanks for the reply dping. What I'm doing with two (or in my case, three when it's fully rigged up) capture cards is irrelevant to the issue at hand. Though I can see how it might impact PCI-E bandwidth if it was somehow saturated. Regardless, this happens with just one capture card installed and the rest left out. At the time of that log, I had two installed.

I don't use XSplit for audio as that is a device driver installed by default when one does install XSplit on the side. I used XSplit to test the issue further, but it's not in use in this instance... and like I mentioned in the original post, these issues occur on a fresh Windows installation with the minimum required amount of drivers installed. My audio comes from a firewire interface on my mixer, which I tested removing as well.

And no, I am not using multiple capture cards at the same time. I've tested it in the most simplified configuration as it can get and still have this problem. (Fresh OS + drivers + OBS)

The primary reason I'm making this post is to see if anyone else has seen something similar to this. Maybe even Jim might have seen something similar at some point in development perhaps. I'm truly puzzled at the randomness of it. I've monitored as many sensors as I could to see if it has a correlation with a spike or dip in something... maybe voltage.. clock speed.. something! Nothing that I can monitor so far seems to line up at the time it chunks up (stutters) like that.