Hi there,

I recently built a top-notch x299 system with the following specs:
i9 7900x (10-core, 20 thread)
ASUS Prime Deluxe x299 Mainboard
GTX 1080 ti
64 GB DDR4 RAM
2TB Samsung 960 Pro M.2 SSD

I experience heavy stuttering in my Fullscreen-Output when i open any Settings in vMix or dare to open a Web-Browser or even just Windows explorer. Also the vMix surface regularly takes a considerable amount of time to build itself up. It all looks very much like the machine is lacking ressources.
I currently have 4 HDMI Inputs and one SDI Input via Magewell capture cards, a couple of Multi-views and ten video-files as my Inputs. Maximum video-size is 1080p, production-size is 1024x768/50p (LED-Wall)

Any idea how to make these performance issues go away? Buying better Hardware is no option since there hardly is better hardware short of server-grade equipment ;-)

Any suggestions are welcome.


-simon

For now, turning down the master framerate to 25fps did the trick. I'll do all the suggeenstions once my event is finished. GPU did fine the last time i ran cinebench but I'll be shure to check your suggested benchmark as well. For some reason my 1080ti shows up three times in the "performance" Tab. Any idea why? Can this be part of the problem?

thanks!

PS: awesome response-time!

Hi Simon,

If setting vMix to 25p has resolved the problem for now, I suspect it is because one of the displays connected to the computer
is only running at 25hz.

You can check in the NVIDIA control panel to see which one is, and try increasing this to at least 50hz if that is what you would like
to run vMix at.

Also for best performance all monitors attached to the computer should have matching refresh rates where possible.

Regards,

Martin
vMix

Thank you Simon for being a trail blaiser. Thank you Martin for helping Simon.

Makes no sense that your i9-7900x with the best of the best hardware and software would have any issues at all ....at least to me.

Thank you all for working on figuring out the hangup(s) for the rest of us.

Rob

One thing worth noting is that due to hyperthreading 50% CPU usage can actually mean 100% depending on what is being processed.
However, our studio system is running almost identical specs to what is mentioned here and it is very difficult to use up
CPU usage unless playing multiple 4K videos at the same time, so there might be something else going on.

Using Task Manager you should be able to see which process is using all the CPU, if it is vMix
then adding inputs one by one until the high CPU input is located will help isolate the cause.

Regards,

Martin
vMix

https://www.howtogeek.co...y-effects-in-windows-10/


Also -- what happens if you swap monitor roles?

I would remove geforce experience and leave drivers in place obviously. You may want to check if shadow play is on first and see if that makes a difference.


This is definitely not normal I agree with Martin.


I had an odd experience that is similar to this Friday night.

My system is similar setup with an i7 and an older ATI card that stays around 4ms render and 20% CPU. I wanted to bring in a webcam so I set it to MJPEG and it complains so I started to tinker with the video format settings and when I went to another (cant remember which) my render times went to 40ms and 90% cpu. It didnt stop until I deleted the input.... So a stray setting on an input can create havoc....

What are your render times during the stutter?

Sounds as though you are making progress.

The geforce experience is a mixed bag of stuff, driver updates, game optimization etc. Problem is its a mixed bag which works great for some and not for others. The stuttering on the monitors is something I have ran across before.

I have had the jump in FPS that you are describing during intensive cpu procedures and I attributed it to the way that vmix is calculating it. When I look back at streams or recordings its rock solid. The best indicator is the render time. But the stuttering shouldnt happen anytime...

Can you give us a continuum of render times? What is your max and what is the usual? What is the render time when you are stuttering?

Also I am still curious if you switch monitor roles if that changes anything.

Also, download gpu shark and take some real time readings during the stutter.

Simon.....

Did you get it up and running like a swiss watch!

Is the problem solved?

Thanks

Rob

Maybe a long shot, but for Asus motherboards I have found that disabling the Sonic Studio improves many things, see https://forums.vmix.com/...aspx?g=posts&t=14119

Hi Martin and others,

I went over the common diagnostic steps...

1. Slow graphics card

1080ti, that should work, but my other vMix systems with a 1070 perform better...

2. GeForce Experience "Share" feature is turned on

GeForce Experience isn't installed.

3. Too many inputs

How much is too much? Do blank shots as placeholders for my short keys count?
"High Input Performance Mode" is turned on.

4. Graphics card installed in incorrect slot on motherboard

Card is installed where it should be and GPU-Z confirmed it.

5. Two or more graphics cards installed

Nope.

6. Driver issue

I installed LatencyMon and can't see anything unusual. The Nvidia drivers were freshly installed from a download directly from Nvidia.
Regarding "Asus Bloatware": I have had Asus AI Suite 3 installed and their "Intelligent Processors 5" installed. I accidentially overclocked the system via the "5 Way Optimization" and reverted the overclocking features later.
"Intel Turbo Boost Max" is disabled. I tried to uninstall it, which didn't work.

What are the next steps? Is there any way to sort out hardware problems? Would a complete reinstallation of Windows help?

Here's an overview of the machine:
ASUS X299 Prime Deluxe board
10core i9 CPU
64 GB RAM 2400 MHz
Gigabyte 1080ti card
2 x 1 TB Samsung Evo 960 M.2
Blackmagic Decklink Duo 2
Blackmagic Intensity Pro 4K
ESI Maya 44ex Audio Interface

Thanks for helping. I expect much of this machine and would like to use it to its full potential. :)

Regards
Seb