Hey there,
in my project there is a very tall amount of datas (10.000 - 100.000 Objects / set of data).
First I organized everything as Objects. There were a lot of Objects with several variables and these objects had references to a lot of other objects witch also had several variables and references. And so on.
But when the “game” get starts, the computer is very slow - it stucks and sometime it crashed. (It is not problem of graphic - i use most simple/primitive Graphik)
I don’t understand, why performing the “game” causes such problems - because graphic is low and in the begin, the datas will not computed - they are just disposed.
Then I changed everything - i used structures instead of objects. But when I finished after a week, i experienced, that there is not a cognizable difference in the performance of the computer. The computer still have problems to run the “game” - it runs very slow und it stucks.
Now I wonder should I choose the way “using objects” or should I choose the way “using arr of structs”?
I found the hint "An actor currently takes up about 1016 bytes while an object takes up about 56 bytes. " - this shows, that using objects needs clearly less ressources than actors. But - I didn’t find any informations to compare structs and objects.
Do anyone have an idea - which needs less ressources - (a tall number of) Objects oder (a huge Array of) structures 
Using structures which contains maps of structures which also contains maps of structure seems to be a terrible idea. It is a horrible effort to change a value in such a structure - a lot of make- and break-Methods (and set member of) have to be used. So I wonder wheather it would be better to change the way again - using objects again instead of using structures.
It would be great If someone could give some hints,
best regards 
