this has been an issue from the 1st day.
But, I would just watch IPTV if the Tiviar + was recording. Its time to fix. So I assume with dual tuners you should be able to watch 1 channel and record another.
I have a loop cable connected from out to in. I've changed tuner A and B to same and loop through A but it doesnt allow watching 1 and recording another. I keep getting "Tune fail"
regards