Have you checked for a firmware upgrade for your device? That firmware might be buggy. Just a thought. But upgrading firmware usually has improvements in performance.
There's no point in setting LW to UPnP if your router's UPnP option is not enabled. You'd need to enable it on your device 1st. Also with manual port forwarding. I presume you set up a Static ip before you started with the manual port forwarding. Or is this what you did. If so, then I don't know. |