OBS caps my in-game FPS

[Dutch Terminator]

When OBS is active, my in-game fps (League of Legends) caps at either 45 or 60 fps, I am not recording, at this moment nothing of the game even show in the scene. Just a soon as I open OBS the frames get capped it seems.

 

[Lawrence_SoCal]

Hopefully you understand that real-time video encoding is VERY computationally demanding.
And OBS is diong that encoding once you start it and have a scene with a video source, regardless of whether streaming/recording (which only impact the output, not the processing .. sort of). And if you use Studio mode, then you are doubling the video processing workload

I recommend monitoring hardware resource (CPU, GPU, RAM, etc) utilization [for ex. using Task manager’s Performance tab and/or Resource Monitor] to see if your system is being maxed out with your settings

That said, your log doesn't show a record or stream, so some detail missing
As you have a GTX 1050 Ti, are you sent to use NVENC for GPU encoding offload?
Boost your stream quality — choose the right encoder! | by Andrew Whitehead | Mobcrush Blog
Get the most out of your CPU or GPU and stop dropping frames Jul 2, 2020 · 4 min read