Dual router config

[kaworu1986]

Due to the fact my ISP requires a proprietary router to connect and the fact that such router sucks badly, I've resorted to hook a second router to the ISP's one and forward traffic on all the ports of my isp router to my router's wan port (which has a static private ip address) and then opened ports as i needed on the second router.

As my "internal" router has UPNP enabled, bitcomet reads the router's wan port address as my pubblic address until it's informed by the tracker of my real pubblic address, which doesn't always happen.

I state this again, port forwarding works as I intended. (I checked with emule and always get high ID using that program)

Does this have any performance impact on my torrent downloading or I need not worry? If it does, is there any way of fixing it?

Thanks in advance