I've got 40 down, 5 Up. I mostly have smooth or near smooth experiences now except for when my opponent's internet isn't good. Keep in mind that you could have local issues that are preventing a good connection (like a lot of interference or competing Wifi signals if you are on wireless, or misconfigured router if you are hard-lined in) and, if I remember right, the Wii U max's out it's internet speed at 10 Mb down. My Wii U is now connected via ethernet cable, and I see a consistent 8 Mb on the Wii U itself (max out at 10 Mb, lowest is 5-6 Mb on bad days) when I perform a speed test. When I was on Wifi, I was getting an average of 4 Mb, with a high of 8 and a low of .5Mb due to lots of WiFi interference.