Please review the analyzer and follow directions and recommendations on it:
OBS (Open Broadcaster Software) is free and open source software for video recording and live streaming. Stream to Twitch, YouTube and many other providers or record your own videos with high quality H264 / AAC encoding.
obsproject.com
You have too many plugins. Remove all that you don't use. Update and make sure is compatible with OBS 30.2.x the ones you do use.
Your network connection shows as 10mbps instead of 100mps or the new normal 1gbps or 2.5gbps capable connections.
So, your network adapter is failing, the driver broken, both cases at the same time, the router / modem have issues, or the network cable is way too old and can only manage 10mbps.
Looking at the CPU you have I can safely guess your motherboard network adapter is a 1gbps capable one.
You need to verify all this.