I'm relying on years of problem analysis and I had this thought.
All these disconnects just started for the most part within the last 2 to 2-1/2 months, right? Soooo, what happened in that timeframe ... a couple publishes and the implementation of one more on TC. But the biggie is the keep/castle design stuff ... using a bastardized version of the customization tool. Is that not so?
What if that tool that is in (I imagine) decently heavy usage during this time is causing network fluctuations? And anyone who has dealt in the computing world knows that sometimes the most unlikely thing can be the cause.
@Lord Arm noted that pubs seem to do it to him.
@Basara noted it started in August ... about the time castle designs were introduced. I can't pin it down as I don't spend all that much time in-game, but today was not fun.
Just a thought.