I just recently got my server up, port forwarded, and I use No-IP(DynDNS). The server is on my laptop, and my friends from around the country can connect and play with no problems. But my sister and I, as local connections, get kicked every couple minutes. We join, walk around a bit, but then the server freezes, like mobs freeze, commands don't register, levers don't work for like 30 secs and then we get kicked. (We are on separate PCs, this happens to us individually, not at the same time}The "reason" for disconnection is either "Timed out" or "An existing connection was forcibly closed by the remote host". The console either says "Timed out" or "Disconnected". Again, only local connections are effected. Please help, thanks in advance.
Edit: forgot to mention: I also tried hosting from my PC. I don't get kicked if im playing and hosting on my PC, but my sister still gets kicked. I tried hosting with my laptop on wifi and ethernet. still disconnected