Welcome to the community. It's nice to have you here.
Sorry to read you are experiencing buffering whilst streaming on Twitch.
Looking at the connection, the router is showing as offline and not polling any data. Is the router turned off as not in use? If you can let me know when you are back online, I can check this in more detail.
In the meantime, do you notice this on all of your devices?
Are you connected through wired or wireless? If wireless, is there a difference when you use an Ethernet cable?