I have 2 problems with Halo CE (i've tried both Combat Evolved and Custom Edition):

1. When i enter a server it usually lags. Sometimes a little sometimes a lot. I don't know the reason since my DL speed is 30mbit and UP speed is 20mbit. What could be the reason? I've opened the ports.

2. I barely get any servers to show up in the Server list. At this other computer (in the same house) it usually gets like 300 servers online, but on this one i usually got only ~50 and now it only turns up 1 or 2 servers. Why could that be?