OBS dropping frames and getting these "surges" repeately

[jet7]

This issue has persist over 8 months now.

It happens even when OBS is not streaming or recording at all.

The preview windows shows clearly that it drops frames. Then suddenly it is normal again without any missed frames. And this happens over and over again....

Have re-installed OS and everything to te latest versions.

Even changed the power supply to a beefier one.

Setup:
MacBook Air M2, 8 GB RAM.
Latest MacOS
Latest OBS

Full HD video at 25 fps is coming in from BMD UltraStudio Recorder 3G SDI with Thunderbolt 3 cable.
Few NDI sources are also brought in from ProPresenter

Before this issue started to manifest we had no issues at all even when we used Full HD at 50 fps!

 

[jet7]

This issue is also present on our MacBook Air M1, 8 GB RAM that has similar inputs.

 

[jet7]

Please reply to THIS thread:

OBS 31: frames freeze with multiple capture devices

OBS Studio Log URL https://obsproject.com/logs/swQiLe8F1M23NyAr Expected Behavior Stable flow using more than one capture device card (in this case Elgato CamLink 4K). Current Behavior Using two Elgato CamLink 4K devices for multiple camera sometimes the video stream in Preview or On-Air it's...

obsproject.com