old, low-end computer trying to perform real-time video encoding which is VERY computationally demanding. And not having a good GPU for encoding offload. And you set up for 60 fps.. so no surprise
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 [which it most likely is]. My recommendation is to research OBS settings for under-powered computers
- start with 30fps
- research quicksync optimized settings for encoding
- Oh, and follow OBS instructions and do NOT record to MP4 (explanation of why is on-screen)