Framerate drops when recording in 4K60FPS

Crazyreyn

New Member
Hello! I'm experiencing unexplained framerate drops when recording (not streaming) in 4K60FPS using an Elgato 4KX. The CPU usage remains low throughout (around 5%) and most of the time the videos record fine, but then you have a stretch when the framerate drops really low (I've kept an eye on the CPU usage and can't see it dropping at the same time), and I can't figure out why.

Example of what happens in the footage: https://youtu.be/ja04RfoOZ2s
OBS log (this is of many short videos back to back - I noticed the severe drops in the final two videos): https://obsproject.com/logs/Mlp4hbEj8OmHTcDu

Hardware:
  • Macbook Pro, M3 Max
  • 36 GB memory
  • OS: Sequoia 15.5
  • Capture device: Elgato 4KX
Finally, my OBS recording settings are attached in screenshots.

Let me know if I need to provide any more information. Thank you in advance!
 

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