Hi

Is anyone else experiencing high render times, high GPU and CPU usage, since upgrading to Windows 10 build 1803 (Spring Feature Update) ? It doesn't seem to affect everyone, but certain hardware combinations do seem to suffer (both desktop and laptop). I see lots of reports of gamers having problems with it - so its not unique to vMix.

My hardware:

MSI Laptop - GL72 7QF
- Intel i7-7700HQ CPU, Quad core 2.8 - 3.5 Ghz
- 16Gb RAM
- Intel 630 graphics
- nVidia 960m GPU (2Gb GDDR5)
- Windows 10 (home) 64bit
- DirectX 12
- System drive is 128Gb SSD

The nVidia GPU is selected in vMix performance settings. I've tried it with/without Optimus (which it used to require).

With only vMix loaded, no inputs (just the 2 empty inputs that you get when you start vMix with no project loaded), I'm getting 3-9ms render time and 1-2% vMix CPU usage (Total ~5%).

It takes no time to get the render time up over 30ms and start getting CPU & GPU warnings.

The performance seems to be around 50% of what it used to be with the previous release of windows and the same nVidia drivers.

So far, it has rendered this laptop useless for vMix - which is very irritating, considering it was working very nicely before.

I could roll it back, but eventually I'm going to be forced to update it for some reason, so I'm trying to fix it rather than give-in!

I am sure this will turn out not to be a vMix issue - it works perfectly on my desktop system with 1803.

G.

Hi Martin,

I've just set it all up as it was on Monday and have snapped a shot of the task manager - https://www.dropbox.com/...5-23%2009.43.11.png?dl=0 . The CPU goes up to 100% - but the attached shows it at 93%

I'm using the latest nVidia driver downloaded direct from nVidia.com .

Windows is set to 'high performance' mode.

I'll set-up team viewer and send you an email with access info.

Many thanks.

Giles.

hi,

unfortunately, after dealing with a lot of issues after windows update, for now i decided to backup my important data, make a clean install of the most recent version of windows 10 and permanently disable Windows Update Service.

it is incredible what Windows Updates can do in a machine, it is supose to correct bugs, fix problems, improve performance but all i have seen is very high end machines working like a snail.

take care guys, system updates may screw your system.

cheers,

melody

Melody - I wouldn't recommend permanently disabling Windows update, for alot of reasons. Instead, I advise doing it in cycles. Here's what I've done for the upcoming football season.

1. Disable Windows Update at 3 Different Levels, it will not be permitted to update going forward.

2. Once our big broadcast season is over, I'll take a few days, make an image backup, update the PC, and thoroughly test it for performance and stability, until I'm confident it's in a stable state. (If it's not, restore image backup, try again a few months later.)

3. Then I'll disable updates again.

This may not be the best approach, but I personally prefer the OS being moderately outdated than severely outdated. Windows Updates are released frequently which bring performance improvements to vMix. So I tend to stick to the freeze/thaw cycle, leaving it "frozen' during or near important productions.

Just me though :)

Just updated my main system - massive render times, Neither CPU or GPU seem to be overloaded.

Been using since V16 without any rendering issues - whats happened?

CPU max 60%
GPU 3D max 40%

Win 10 Pro 1803
Latest Nvidia Drivers (just drivers none of the bulge)
Vmix 21.0.0.44


render times 72ms!!!!!!!

Same deal here only my shows are spiking up to 100% at times and running at close to 80% even before recording or streaming. This was not always the case. I'm not sure the best way to approach this because there seems to be several possible culprits and I just don't have the bandwidth to "test" completely backing up and rebuilding my system setup from scratch.

Hopefully very specific things can be nailed down and there can be some kind of checklist created to help us troubleshoot what specifically might be causing these CPU drains that we can actually fix. I'm going through and trying to streamline the show as best I can, eliminating unused inputs, videos, etc. But right now, even doing basically nothing, it's idling around 60% and when I start to do anything, it pops back up to the high 70's, 80's and above.

There are a lot of factors to consider in lowering CPU, GPU, and render times.

This where I would start to troubleshoot.
A lot of people are saying due to a Windows update, but not always the case.

1) Check to see if all Drivers are up to date.
(But remember Drivers versions aren't always better.)
There are always bugs/issues..

2) Open Task Manager

3) Look In Task Manager, are there any applications or services
using a lot of CPU, GPU, Ram, Hard Disk etc resources.

4) Question to ask? Do I need these Apps/Services at Startup/Running?
Get rid of any factory/bloatware/anti-virus/Apps/Service etc running
on the system that is not needed.

5) A lot of issues I have seen in 35+ years of servicing PC is

A) Low to no Hard Drive space on OS Drive or Recording/Storage Drive.
B) Not Enough Memory.
C) Internal or External GPU, Proper Video Card selection.

A lot of bottlenecks is due to simple issues stated above.

6) Videos/Pictures etc used in vMix, are they all the same screen size as the stream or
different. (file formats are another issue, are they the most efficient formats used)

Have to remember, if you are streaming at 1080p and your videos/pictures are 480p/720p/1080p
etc... and your streaming 3 streams at different resolutions and recording at another
resolution, size of recording Bit Rate, streaming rates, are the animated titles being
anitmated in vMix or pre-rendered, then this will play a big factor.

I try to have all of the screen resolutions for all media the same resolution as possible to
avoid having the CPU, GPU re-render for different resolutions and try to use the best file
formats possible. (not always possible, but pre-planning is the best solution)


7) Start vMix with no inputs. and verify Task manager for steps 3 - 5.
and slowly start checking every aspect of your stream.

8) One question to ask yourself is? Do I need to record at 25 - 75 MBPS or
is 8 - 20 MBPS good enough..

Hope this helps to resolve some of your issues..

The GPU 3D workload reported by Windows is wholly irrelevant.

vMix is clearly reporting GPU overload. The GPU resources that vMix requires are being overtaxed. That are largely 2D resources, which is why the 3D numbers don't matter.

If you are trying to use 3 hardware encoders (different streaming and recording settings) that might well explain the issue.

Create a new profile?

we had two computers all exactly the same and one started maxing out and collapsing.. we swapped the Ethernet cable over on each computer and the problem moved over with the Ethernet cable. It was the network being patchy, specifically the wire wasent letting a Gb down it, and the computer was trying to keep this smooth.