Well, coin control is indeed working nicely (when I keep the total amount of bytes below 100.000) and I am in currently the process of moving all around (bitchjob, but if I can stake for my full amount well worth it) ... any reason for that 100Kb border by the way?
(This does explain some other issues I had with other coins I mined for a longer period; with Myriad for example I could not send more then ~ 100K , so I guess it's common behaviour)
For anyone else who is moving coins by coin control: the sweet spot seems to be 675 inputs
100,000 bytes transaction size limit is a rule implemented by Bitcoin and most of the coins decided to keep it.
I'll do a bit of a research to see if we need to keep it.
Thanks,
V.