We may need to evaluate whether the router can implement TV server. We need to ensure that the router OS stably and meets existing (or future) functions of the network, and the remaining performance may not be sufficient.
Truly sorry.
I'm responsible for the M3UPT project and usually recommend people to get an Enigma2 receiver or a mini PC with TVHeadend if they want to create their own TV server.
It would be great to have the external DVB tuners detected by GL.iNet routers so we could use TVHeadend. I'm sure we would see a boost of sales of GL.iNet routers.