That is a low power CPU (U = ultra low power), optimized for battery life, not the computationally demanding task of real-time video encoding.
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 (and I'm sure it is)
Be aware that your PC is old (6 generations of CPU), and under-powered for such work. Livestreaming with OBS on your PC can work, but realistically if you become VERY knowledgeable about optimizing Win10 OS and OBS for an under-powered PC [for real-time video encoding].
Others stream just fine with even older gear, but they also aren't using a number of CPU intensive filters/effects.
And
- start with 30 fps and see if you can get that to work, well, before trying 60fps
- always best to avoid WiFi for streaming unless you know EXACTLY what you are doing (know how to analyze WiFi spectrum & channel usage, etc)
- your logs are full of
14:20:51.473: Device Remove/Reset! Rebuilding all assets...
basically - don't do that. If you are physically removing something OBS configured to use, let the OS have time to settle down. And you may need to adjust OBS, or exit/restart OBS [depends on what you removed]
As basic troubleshooting, start with NO color corrections/chromekeying, etc. And remove all audio effects/filters. that is - getting a very simple OBS setup. Get that working reliably. Then start adding on (and monitoring your hardware) until you hit a limit, then back off some to get yourself a little headroom
