I don't think I can really agree with any of the points on this post.

I didn't experience problems with time management in game for my sims and actually doing fun stuff with them and keeping up relationships with multiple sims.

In terms of things being expensive, you mean the items in game? I felt like both Sims 3 and Sims 4 throw way too much money at you in a very short time span. I wish there were built-in options to increase difficulty without mods, like higher bills, or making it harder to get promotions at work.

In terms of lag, that would be hardware dependent and based on your GPU, CPU, and RAM, and if you're using an SSD. I don't personally encounter any lag at all. Currently I'm on a GTX 1080, Ryzen 2700x, 16 GB RAM, and on an SSD. I also remember I didn't have any issues either on my old crappier computer with a GTX 960, 6th gen i5, and 12 GB of RAM, on a mechanical hard drive.

I think the only computer I had slowdowns running the game on had a 9800 GT, celeron processor, and 4 GB of ram, which was pretty weak for that time, minus maybe the GPU.

That being said, I do believe I've read the island resort expansion is almost unplayable because of the technical issues. I've never gotten that one.