I have that annoying lag/stuttering too. I noticed it after the nq version/conf with voting came in. With the initial 1.2.9 update, the game was smooth as silk for me.
Don't know if it was the smaller number of players or conf changes, the last 2 rounds of today were OK.
I just increased the megs settings and disabled the nq style hud. Nothing special. I'll see tommorrow if it was a fluke.
Daredevil i dident loaded nothing at this time... like matem sayd this is a lag what stuttering! and maybe i have bad connection, but still other lags!