I installed no autonomous sea chanty hack but found it does not work (chronic sea chanty singers still singing moments after arriving on lot). I thought it might be a conflict with my other hacks so I removed all other hacks, but still not working. I have all EPs and SPs including Teen Style so maybe a clash with one of them. I also don't have any patches since before Pets so that may make a difference.

I have the same thing. It's the lighting. I don't know why but the lights stop illuminating the Sims. Buying new lights usually fixes it but some of my households are permanently like it. It's a game problem, not a video card thing.