Can Only Connect To Certain Worlds

Recently, I updated my windows computer, and I found that when I tried to join a world in Wynncraft, I just got disconnected with the message: "An existing connection was forcibly closed by the remote host" after getting stuck in the loading terrain screen for a good couple minutes. I rejoined the server and tried to connect to different worlds a few other times, and after the 4th attempt, managed to log into a world. I don't know if this is a problem with the Windows update, my wifi, or something to do with Minecraft. (I troubleshooted my computer for any problems that might mess up the minecraft connection and tried a different wifi, but didn't change anything.) Has anyone else had this problem or knows how to fix it?

(Sorry if I posted this in the wrong area >-<)

 

thats called:
internet be going nuts.
Please be Patient.

at least in my case it is