I have no tech background on this at all, but as Jatta Raso above has outlined, there is a definite pattern to this type of game-killing lag. That makes me optimistic that a fix can be found. Obviously, it's far worse to troubleshoot a random problem that can't be duplicated at will (like the Crash To Desktop problem that may have been solved with the current patch -- THAT was a hard one to nail down...but they did it! We hope.
).
It's hard to know specifically what the devs are working on with the next patch, although B6's update today gives some indications it is woefully short of any specific details. So, once again.....fingers crossed!