Thanks for the info, so far there are 2 types of constructible objects in my projects, ones that are decor, which use a single bp and just change their appearance and the other type of constructible have certain funcitons like doors and electric system, so far the only thing i have had to use tick for was the electric updates, so its not really heavy at all… So i guess im good with what i have 
(even made a test super large electric grid and didnt get any lag with the tick updates going on because its just testing if current is passing or not, so its ok the way i have it i guess :P)
The thing is that now im running into a problem that is totally unrelated to what i originally asked, so i hope its ok i can ask for help in the same thread?
For some reason the engine started crashing each time i tell it to make a bp out of selected assets in the world, no matter how many assets or what assets they are… if i place a mesh in the world it just crashes when i tell it to make a bp with it… (im doing it this way cause im trying to make structures that spawn in the world with a certain shape made out of the constructible objects i made. They work well if i make them by hand but the moment i try to compact them into a bp for easier use ue4 just gives up and crashes :c)