The realms are lagging too bad. It just started recently. I thought I had a bad connection and mentioned it to some of my friends who are on the realm and they all reported the same problem. Particularly bad whilst flying, but anytime you get moving fast, it will happen. I recorded a video of me playing my realm, and of the lag issues. The lag is so bad that monsters seem to teleport around, if you fall a long ways you'll snap back up and fall again. The link to the video is here: https://youtu.be/PpTBV9t0b58

If needed, I will gladly add one or more of the support team to my realm, and you can play it and experience the problem for yourself.