@J00J_11 The issue isn't Sunset Valley itself—SV is one of the most stable EA worlds to play in, along with Riverview and Twinbrook. And it sounds like this isn't an issue of memory use either. But like I said, if you want to start with a clean folder, it certainly won't hurt, other than the extra time you need to take to redownload your content.
However, the problem might well be some of your mods. I didn't go through the whole list, I started by looking for a few known bad ones (you don't have them, but there are plenty of lesser known bad mods too). But I did notice that at least a couple of your mods are outdated and reported to not work well with patch 1.67/1.69. For example, I googled "Sims 3 Days Off mod," and the MTS mod listed wasn't updated past 2012. Some of the comments report issues with later patches and/or store worlds. Given those comments, I'd dump the mod and just use MC to remove days off when I wanted.
It's a good idea to go through your mod collection and cull any mods that aren't listed as fully updated for at least patch 1.66 (the update to 1.67 was trivial). This is assuming you're on 1.67 or 1.69 as well. If you're not, then using mods meant for a later patch could also corrupt your saves. Any responsible mod creator will test older mods with new patches, and will if necessary update the mod, take it down, or at the very least add a note that it's no longer compatible.
Alternately, you could post at NRaas with your mod list and ask if anyone can spot an incompatibility. My own knowledge of mods is limited to NRaas, a few well-known MTS mods, a few respected creators on MTS and Sims Asylum, and a handful of warnings about poorly made mods from other sources. But there are people elsewhere who have experience with using and troubleshooting a much more extensive mod collection than I do.
