[4.11] Tick event of actors doesn't fire anymore

Hi guys!
I have the same issue with a blue print actor meant to handle camera for several local players.
However, I made this blueprint from scratch, well, based on Actor blue print, but not from any previous UE4 version.
I’m stuck at this since days. I’ve tried to setup a lot of things in the Ticks category, even playing with tick groups… nothing works.

I’m not really comfortable with c++, so I’d rather like to get a blueprint solution…

Hope someone could help…Thanks in advance!