Since .61 has been released on experimental, the server browser is still lagging for me. One of my friends at first had no issue, but then he had the same problem as me. It doesn't seem to affect a lot of people. It's been pissing me off, and I don't understand why it's happening. I was hoping this was an issue that would of been posted on the feedback tracker, but I guess not...
I've also lowered my setting to really low, my fps was even better but the lag still remained on the server browser..