@SuperNTG I hadn't heard of it until now, nor had I heard anything about whether it works as intended or breaks saves. What I would suggest, if you'd like to try it, is running it alongside the usual cleanup-related NRaas mods (but NOT StoryProgression), on a spare copy of your save, to see whether you like it AND whether it makes the game use more RAM than you can accept.
The fact is that Sims 3's memory limit of about 3.7 GB (4 minus some overhead) gets in the way already, not always but often enough that we all have to be aware of the potential problems. A mod like this would almost certainly increase memory use; the question is by how much, and then whether your save can afford it, so to speak. I don't know the answer—it'll depend on how the mod is programmed and how much RAM your save can spare.
Then there's the question of whether this mod causes other problems. It may or may not; I'm not trying to criticize it, just saying it's complicated enough that it really does need to be done exactly right. This is why I'd suggest testing on a spare copy of a save, or a new save, so you're not doing damage to anything you'd like to preserve. if you're happy with the results, you can add it to your main save.
Please do keep an eye on RAM use though, in case this amount of overhead is not sustainable. You wouldn't want to start a save that already uses > 3 GB RAM with this mod present, then need to abandon it a few sim-weeks in because it's crashing or throwing out of memory errors. But again, it might be fine. And the less memory your save uses without this mod, the more room you have to accommodate the extra workload.
