Wireless router w/ DSL. Under advise from my fellow RPMers I DMZed my Wii yesterday. Although I did have a perfect match beforehand, once, but I think it does help make connections more reliable. I also try to turn off my computer while Smashing.
Who has firewall running at the same time? Sometimes that causes lag too.
Don't all wireless routers employ a Firewall by default? I know mine did, and I was looking for the cheapest piece of crap I could find (mainly because I had only my DS at the time). I do leave the Windows Firewall off, though. No sense in having to enter in all the same filters twice over.
BTW, for fellow DI-524 users, if you have one of their more troublesome revisions, someone may have told you to shut off the "Auto" option on the TX Rates due to the DS not liking it. That is true, however contrary to early reports you DO NOT have to leave it down to a measily 2. It slows all wireless connections immensely if anything but your DS is on it. Crank it up to 54 and all should be well.
Hell, while I'm on that topic, here are all DI-524 settings one needs to watch out for. Much of this, Security in particular, could probably be applied to other routers as well:
Home>Wireless-Change the Channel (it's 6 by default). Nintendo recommends 1 or 11, but you can try others if they don't work. DSOrganize has gotten reports of 10 working for Lite users who are having trouble.
-SSID Broadcast Enabled. Yes, you can enter your SSID manually and technically not need this, but the connection seems to be less reliable that way.
-Security: Need WEP if you're connecting with a DS. Authentication should be Open System. Set Encryption and Key Type to your liking, and use only Key1 (ignore 2-4). If using WPA for your Wii (you cannot connect with a DS this way), you need to use the regular WPA and
not a passphrase.
Home>DHCP-Give your Nintendo systems static IP addresses (homebrew folks: do the same for your computer if you intend to be using DSJoy; you'll need to open a port for that as well). Again, you can technically work without this, but the connection won't be as reliable.
Advanced>Performance-TX Rates to 54. The DS hates "Auto", Wii I'm not sure about.
-Mix Mode
-Long Preamble
Advanced>DMZ-Enter the Wii's IP address. Since you cannot enter two IPs at once for DMZ, you might want to go into the Advanced>Firewall section and add a rule for your DS to mimick the DMZ's rule for the Wii.