Tvheadend

Hello, I am new in Tvheadend.

I installed it on a Debian server and add my ISP IPTV channels. It works great in LAN with Openelec frontends.

The problem is that I want to play it from WAN access. I have good internet connection in the server side (300/300mbps fiber) and 100mbps download speed in the client side.

If I play SD channels from WAN they works great, but if I select HD channels, it play pixeled.

Maybe if I transcode it to better compression, could works better?

How could I debug it?

I will really appreciate your help.

Best regards.