Please, everyone, just stop.
This bug report is not even about a specific, reproducible problem. "It's my router," "it's my inventory," "it's ok today," "later it got laggy," "my buddies didn't have the problem," "earlier I didn't have the problem," and so on. "The magic desync number was at X," "my inventory was slow," "the server felt laggy," etc.
As Rocket himself has said, the chain is not necessarily an indication of a problem. It basically just means "loading", and that's exactly what happens when new clients connect to the server.
Actual "desync" is when clients' local states are out of sync with each other, i.e. one guy sees his buddy running in place, but the other guy on his own screen is 200m away. This can happen with no visible red nor yellow chain. And when there is a visible red or yellow chain, everything can still be working just fine for you and your buddies nearby.
People really need to stop using the term "desync", because most people don't know what it is. It's very much like the way people say they are getting "lag" when their actual problem is low framerate. Lag refers specifically to network latency.
All of these issues--and they are many and many are orthogonal--will probably be fixed naturally in the development process. All this "Me too! I also had problem Y and felt like the game was laggy!" is not helpful. At best it's a waste of time. At worst it misleads people into changing system configurations which won't help and may actually cause other problems.