We have a post about the endless turn explaining this a bit further. This is caused by a disconnection issue. If the problem persists, please include a WinMTR file until the problem occurs for 10 to 15 minutes. Copy and paste the text file created and paste it between two ~~~ like so:
~~~
WinMTR Here
~~~
If you have issues pasting here, use Pastebin and post the end of the link. (ie. 123456 for pastebin.com/123456)