This does not happen on EU or any other game I play. I just will randomly drop out of the battle server, and NA1 and only NA1 does not show up on my server list. I can be on TS/or skype, never drop from them, just NA1. When it does show up I get this name is in use by another player for about 5 minutes. Is there any way I can resolve this?
Yes actually, if you have any friends that work at a tech shop, see if you can have them run their company's recommend virus / spyware / malware removal applications for free at his or your house, that helped me quite a bit. Also improved my frame rate, I had a pretty dirty computer from all that XXX and "Watch Game of Thrones free HD". If you don't have an ethernet cable for your computer, getting one would help, wifi is pretty good but ethernet is about 1.5x better and more reliable. My father has his office near our router, he gets about 47 MBPS internet speed with an ethernet, I have wifi upstairs in my room, maxing at only about 27 MBPS. If you're using an adapter (an adapter is to connect to wifi), maybe it's just not a good adapter. Warband is a sensitive game, I lose connection a lot too.
I always turn off my phone's wifi search before a strategus battle too, because my stupid phone always uses the wifi when I don't even know.