Question / Help OBS recording lag after update to Mojave

[javanutsy]

Hello! So grateful for this site and all the resources available. Have learned so much.

I have a question regarding lag while recording video on my MacBookPro (mid 2012, i7, 16gb RAM, NVIDIA GeForce GT 650M 1 GB, Intel HD Graphics 4000 1536 MB) running Mojave. I use the original CamLink capture device to capture video from a Panasonic x920 camcorder, NDI to capture slides from another computer.

I noticed that after upgrading to Mojave, performance of OBS has decreased to the point where I see occasionally see lags (video freezing for few seconds) in the recording (and preview in the program.) CPU usage also seems to spike occasionally. When I was running High Sierra, I did not notice these problems.

Does anyone have any suggestions? I have attached log file. Thank you for any help!

 

[Narcogen]

Your machine isn't able to keep up with decoding your incoming NDI source.

On a machine that age, I would strongly suggest downgrading to High Sierra if possible. With respect to OBS at least, you gain nothing by upgrading to Mojave except losing features and, apparently, performance.

10:47:59.208: adding 23 milliseconds of audio buffering, total audio buffering is now 23 milliseconds (source: NDI™ Source 5)
10:47:59.787: adding 23 milliseconds of audio buffering, total audio buffering is now 46 milliseconds (source: NDI™ Source 5)
10:48:00.415: adding 487 milliseconds of audio buffering, total audio buffering is now 534 milliseconds (source: NDI™ Source 5)
10:48:00.562: adding 92 milliseconds of audio buffering, total audio buffering is now 626 milliseconds (source: NDI™ Source 5)

:51:22.958: adding 23 milliseconds of audio buffering, total audio buffering is now 650 milliseconds (source: NDI™ Source 5)
10:52:05.908: adding 185 milliseconds of audio buffering, total audio buffering is now 835 milliseconds (source: NDI™ Source 5)
10:52:06.811: Max audio buffering reached!
10:52:06.811: adding 208 milliseconds of audio buffering, total audio buffering is now 1044 milliseconds (source: NDI™ Source 5)

 

[javanutsy]

Thank you for the response! Which component of my system would you say is causing the bottleneck?

MacBookPro (mid 2012, i7, 16gb RAM, NVIDIA GeForce GT 650M 1 GB, Intel HD Graphics 4000 1536 MB) running Mojave

 

[Narcogen]

In this case I believe it's the CPU but none of the elements in a MacBook can be upgraded, and OBS performs less well on MacOS and with fewer available features on the same hardware.

No current MacBook is really a good choice for running OBS, especially not compared to either a desktop (ideal) or a laptop with an NVENC-capable Nvidia GPU.