Attention Splatooners!
So you purchased Splatoon, but, to save money, your Internet Service Provider (ISP) may be slower or less complex than you originally thought you needed. Possibly, as a result you purchase a router to provide the convenience of WiFi in your home... but then comes the lag *woman screams*; then you find your ink is not spraying *man screams*; FINALLY--the horror!! The Connection is Unstable *baby whines and cries*. Let me tell you a little about how I fixed this using my D-Link Router settings and my helpful Tech Support Agent.
I, too, was plagued by the agnonizing frustration--a Virtual Insanity, if you will--of being dropped by my Splats. I searched for days with a mouth-drooling determination to find what technical technicality I was dealing with. If you've done any research, you may have been inundated with acronymns of DMZs (demilitarized zones), NATs (Network Address Translations) or IGDs (Internet Gateway Devices). First, I needed to get inside my router to see what was going on: Browser; I type 192.168.0.1 into my address bar to contact my router--not unlike a knock at the door. I am an Admin(istrator) and I enter my password do enter. Some routers may ask you for an alpha-numeric code to enter to ensure you're not some program trying to hack in. I had been in and out of those settings so many times, I seriously considered changing my brilliantly complex password to something simpler.
Long story short (as I'm sure you've scanned all through the hyphens and breaking punctuation to get to the point), my tech support agent walked me through the process of creating a Static IP Address for my Wii U. Now, if you love technology as I do, you have several things connected to this router. Each gets setup, by default, on what's called a Dynamic Host Configuration Protocol (DHCP) list. The key word here is 'Dynamic'. When your devices connect through a router, they bounce from IP Address to IP Address back and forth. I'm foggy on the details and I don't know the facts. I think, with games like Splatoon, matchmaking is hard with a lot of people out there playing. Again, I don't really know. The point is, you need to create a VIP list of sorts for your Wii U to connect through exclusively. Go with the night club analogy with me. So, at this point your Wii U has been sitting in the Lobby/Home Screen dingling away with your usual internet connection. Meanwhile, on the router setting screen (which might timeout on you, requiring you to sign back in), which is my D-Link screen and may not specifically be like yours but may help steer you in the right direction.
There are columns of options at the top: SETUP, ADVANCED, TOOLS, STATUS, etc... I choose SETUP. Then, along the left side of the screen it says: Network Settings. I click it. When I scross down, I find a list of devices connected to my network, such as my Xbox One, laptop, Nintendo Wii U, etc. Each item has two things somewhere aligned with them: a MAC or Hardware Address and and IP Address. Look for the Wii U and copy them down. Above this DHCP List is a field to make a DHCP Reservation List. Here's what I did: If you look throught the Network Settings, you should find an IP Address Range of some kind that goes from 192.168.0.100 to 192.168.0.199, or in my case even higher. So take the first three sets (192.168.0) and make up the last three between 100-200. For example, use 134... but, really, don't. Go to that field for the Reservation List and click a check mark on Enable. Next, it wants to name it. See if there's a drop-down box that may list those other devices you have on, what we'll call, the Dynamic List. I chose 'Nintendo Wii U' and all the sub-fields below just auto-populated. This is where we have that three-digit number we made up (not 134) and we fill in our exclusive IP Address. If the Subnet Mask does not auto-populate, you can find that info where we found the IP Address Range and Default Gateway, and a slew of other numbers that may mean very little to us. Once I saved all of that, I saw my Wii U on it's own private Reservation List.
To complete this process, I switched off the router, waited about 15 seconds and switched'er back on. I refresh my browser and log back into my router to ensure my Wii U is still on the list, then close it and try my best.
I immediately saw a difference in the crisp and clear connection I was getting. Upon entering the Lobby, I didn't even get that short message advising me that it was "Connecting to the Internet". We were in and moving right away! Since then, I have had several seemless sessions on Splatoon and I can now enjoy the online intensity I've been waiting for.
As a side note, I'd like to give a shout out to NOA_VICTOR and ONE-OF-THREE. I posted some things in the midst of gamer rage and technological impatience that were not cool. I shamed the good nature of this and similar forums of open and respectful discussion, and for this I sincerely apologize.
As redemption, I hope many frustrated gamers having issues with Splatoon can find a simple solution through my little article. If you get connected, I'll be behind you... splatting your face in Ranked Battles!
Happy Gaming!