Hello, recently I have a VU + DUO 4k and the zapping is also very slow.
I am not an expert at all, but notice that the delay occurs when the transponder is changed.
The found trick on the dutch forum of user Lemmingsbeest works great.
His advice:
Try the following:
Go to the channel that gives "tuning failed" and wait a while for the picture.
Then go to menu, settings, channel search, manual search, then change search mode to user-defined transponder, set FEC to auto and then press ok.
Recipient then seeks on that transponder then confirm green button ..
Then back to your channel list ...
Repeat on other transponders that also have that problem ..
I now have a Vu Ultimo4k and have had that problem on some transponders ..
Only if I do a "fast scan" do I have to do this trick.
I always find it annoying to have to do that............and hope that this problem is easier to solve.
Thx