I have a ridiculous problem: Whenever I turn on Wifi on any of my two old 3ds xl (just turning the switch, not even actively using it for anything), the Streams from my Amazon Prime TV Stick drop down to super awful quality. It goes like this: I turn the wifi on, I get no more HD for the Stream. I turn it back off, HD instantly on again. I can repeat this without fail indefinitely. I have a 100 MBit cable connection with unlimited data, so that can't be the problem. No other Wifi device (laptops, smartphones, tablets) has the same effect on the Stream. I use a TP Link Router, the 13th Channel (all other are crowded around here), 2,4 Ghz with the 5 Ghz turned off. Wth can be causing this? How and why? Anyone else having the same problem?