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Higher render times if vMix application on foreground?
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Has anyone else encountered an issue, where render time is higher when vMix is the active application? Conversely, having vMix running normally while having any window (e.g. Windows Explorer) on the foreground, in any window size, render times drop considerably?
I'm having an ongoing setup where the render times hover consistently between 20-35 ms with vMix on foreground and 11-19 ms with Explorer window in front.
System information:
vMix 4K 24.0.0.62, 1080p50 project
Windows 10
Core i7 8750H (edit 9750H)
RTX2060
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Are you running something else on te PCI bus except the GPU.
NVMe SSD
Capture card
....?
If, it might be that the PCI lanes get in conflict. The 8th gen i7 is 16 lane if I'm not wrong. The 16 lanes is full with your GPU already.
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Rank: Advanced Member
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Joined: 7/23/2013(UTC) Posts: 122 Location: North Thanks: 12 times
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Yes, I'm using external Thunderbolt enclosure with
Blackmagic Decklink Duo (1st gen) and
Blackmagic Intensity Pro (1st gen).
System disk is NVMe SSD.
I had a typo in CPU model (it's i7 9750H).
To me it sounds strange that opening Notepad or any other window to foreground would have an effect on PCI lane or other low-level hardware functions, leading to substantially different render times.
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It may be due to integrated graphics. It is quite simple to find out, connect an external display, preferably using DisplayPort since it is usually connected straight to a dedicated GPU, HDMI may be connected through integrated graphics. Now if you move your vMix window to your external monitor, does the render time go lower? Also, does vMix state that you are running on RTX 2060? (Settings -> Performance)
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Rank: Advanced Member
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Joined: 4/23/2017(UTC) Posts: 1,212 Location: Germany Thanks: 3 times
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Originally Posted by: jip  Yes, I'm using external Thunderbolt enclosure with
Blackmagic Decklink Duo (1st gen) and
Blackmagic Intensity Pro (1st gen).
System disk is NVMe SSD.
I had a typo in CPU model (it's i7 9750H).
To me it sounds strange that opening Notepad or any other window to foreground would have an effect on PCI lane or other low-level hardware functions, leading to substantially different render times.
I can highly recommend checking your system and pay attention to the components. It may have all the IO ports but it does not mean that all of this is getting full bandwidth connection inside the mobo. I'm running a relatively old system with a E5-2630v4 and a P2200. My system is always relaxed so far.
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