I have internet but cannot connect to any online gaming service

Hello,

Tonight and three of the last four nights, I have had persistent internet issues. I can connect to the internet, chat in discord, navigate through browsers, etc. But one thing I absolutely cannot do is connect to live gaming platforms. This includes Battlenet, Microsoft, and Steam. I can access the platforms, browse stores, download updates. But when I go to play games, I can't connect to servers. When I do connect very briefly, I get kicked with either a server timeout or a disconnection. I have no idea what could be causing this. When I use Xfinity internet tests, they all say everything is fine and there are not outages in my area. I've also noticed my smart TVs taking longer to connect to certain apps and Netflix buffering at times which is very abnormal. 

Thanks