After talking to others on the server they were having similar problems too and one of the mods had reset the server, and they are working on the server itself. So we can say this has been resolved for the most part, I was told they had to downgrade back from 1.16.5 to 1.16.4 until issues on the server are fixed.
I made a video but it says the file is too big. Not being tech savvy I tried compressing it but still too big. I play on a 3rd party server. Before the latest update everything was fine, my computer and internet are running at regular speeds from the past.
After talking to others on the server they were having similar problems too and one of the mods had reset the server, and they are working on the server itself. So we can say this has been resolved for the most part, I was told they had to downgrade back from 1.16.5 to 1.16.4 until issues on the server are fixed.