I want to start by saying that at this time, only my played but inactive households are affected by this. When I am playing them, everything seems normal.
- Romantic satisfaction decays from very satisfied to unsatisfied very fast for played Sims while playing another family
With that said, if the answer to my next question is yes, then I have a theory as to what might be causing this to happen.
My question is, does bad woohoo cause a drop in romance satisfaction? Even if it is extremely slight, if the answer is yes, then this could be important.
It came to me last night when I was playing. Most of my household couples love each other like crazy and do not fight and I am pretty sure they all have the romantic trait. The household I was playing last night will woohoo autonomously quite frequently and I happened to notice that while one of them was feeling very flirty, the other one was not. So when they woohooed it ended up being bad woohoo and gave a negative moodlet. If this causes their relationship to degrade, then perhaps this could be part of the problem. When my households are inactive I think there could be ALOT of autonomous woohoo going on and if they're doing it while not flirty or very flirty like I just witnessed, that could explain why relationships are bring wrecked like they are. I never witnessed my sims woohooing when not flirty so this stuck out to me.
I have a particular household that loves each other, but they're not as big on autonomously woohooing like most of my other households because they're both always on their darn computers. And I have noticed that their relationship doesn't seem to get wrecked as fast as all my other households, in which case, my theory above makes perfect sense to me.
And it may not be completely about woohoo, and repeated romantic interactions when one sim is not in the mood, are contributing to the problem as well. I can visibly see the failed romance interactions being negative, and too much of all of it could really tank relationships.
How to fix fix it, beyond me. But a nice temporary, test fix would be to make it so that all of the adults, in our played but inactive households, are in a permanent "very flirty" state while the household is inactive and when the household gets loaded, the state expires in five minutes or something. Or, just block all relationship degradation while they're inactive.