I don't have a fast connection... adsl 480kb/sec or so but before the paramaters were changed with 4.9.30, I always connected as an ultrapeer, which amused me
Since then I have never done so except on one occasion when I was trying to connect as an ultrapeer, and my connection was going off an on and I closed LW and reopened with UP dissabled. so ... even if you don't have the capabilities to be an ultrapeer, something or other might try to make you one. That's why you should deselect.