The aging thing is happening to me, too. Sometime during the childhood of generation 4 I started getting messages about stuck aging managers and some of my role sims developed unusual long lifespans and lifephases.
The game does indeed recognize great aunts/uncles and great nephews/nieces as close blood relations. It's just that there are no relationship panel indicators for these. Romantic interactions between them should be impossible unless one has a mod to unlock them. The same should be true (I think) of great grandparents.
But children of great uncles/aunts, those would be first cousins once removed, are not recognized as closely related, nor are second cousins and higher. The FCOR one still takes me by surprise sometimes.
So would 4 couples be enough or do I need to do more? My maths are bad.
Does the fraps limit matter for the amount of ram the game uses or only for how hard the video card has to work? For example, if I set the fraps limit to 30 instead of 60, will that be beneficial to how much ram the game uses? As in for example 2,1 gb on startup instead of 2,5 gb on startup? Or is there no difference ram wise?