I can't figure out what on earth is wrong. I'll be playing, everthing's fine, F3 screen says I have a ping around 120-150, and then things will just stop working. Like placing blocks doesn't do anything, welding makes no progress, same with grinding. I hit F3, and my ping, and everyone elses ping just shows "----". It stays like this for 5-10 seconds, then all the pings come back and the game works fine for me. This seems to happen every few minutes. It's not happening to other people in the same game. I have a Windows ping running in a command line, and it reports a consistent ping of around 73ms. From shift-F11, my sim speed and the server sim speed are always either 1.00 or 1.02. My FPS sits around 100, and UPS I see 60 or 61. While ping in F3 shows "----", on the Shift-F11 info I can see it bouncing around ~140. I have no idea what could be wrong, or how to debug this. Any ideas? Edit: I should add that I've rebooted my cable modem, wifi router (my computer is wired into it), and the computer.