Hm, strange behavior.

The 4 ms ping time are against which target? Your router or the Avant?
Maybe you can download the "Fing" app, ping your Avant and look whether there is some packet loss? 

No, the ping is from speediest, against their test server. Internally the network is fast. iPhone is on 'ac', and the TV on Cat6 (I 'do' networking...)

0% packet loss from fing (it lives on my phone ...), ping is 0.2 to 3,8 ms

It (remote) seems more reliable at the moment..   

Now, all I need is some sort of EPG, and christmas would be sorted!

Okay, excellent network, indeed.

I think this was all that can be done by you. Maybe the app itself is the problem.
Let's see. Maybe there will be a 2.1 version in the future.

The PolyMote app is also worth a try.  ;-)
Not the current version that is available from the store since this one is not compatible with 1.08.xxxx TV SW.
An improved version (2.5) is on its way an should be available by the end of next week.  

But, that won't solve your EPG problem either...

EPG? Yes, only get 2 lines showing, the rest are empty. Weird.

What I have noticed is that after a while, idly refreshing fing, the 'AVANT...xyz' name disappears . I can still ping, I can still browse the ID string, and remote works, until I kill the remote app, and restart.

I agree, it feels like it's a 1.0 (0r 2.0 in this case), and we need .x revisions...

Thanks for your help