You do have an slow network connection. And you should use 30fps.
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
Also, you shouldn't be using advanced output unless you know what you're doing in there. Keep it in simple output mode.
Run the Auto-configuration Wizard, apply the settings it gives, restart OBS (very important) and test it.
Also, most antivirus are too intrusive and causes issues. As far as you have good behavior online and specially with your computer you don't need any other than the one that comes with Windows, which isn't that intrusive.
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