Hey @ZeeGee @Cororon and @xamira99
I got busy and didn't get around to replying until now whoops. Anyway,
Cororon, I do have both of those mods installed. They've helped immensely with my game in the past, which is why I find it odd how it's not working. The lag is just as bad in build/buy so the issues those mods help with might not be my problem.
For computer information, I'm running on a windows 10 64-bit laptop, fully updated.
Processor: AMD A12-9700P Radeon R7, 10 compute cores 4C+6G (4 CPUs), -2.5GHz
RAM: 12.0 GB (11.5 GB usable)
Memory: 12288MB RAM
Game's graphics: they're not set super high, and I even turned the graphics down low and it didn't do anything. I've been messing with them all day, but to no avail. Normally, I can leave everything medium with a couple on high.
Some weird stuff that's happened since my original post:
Yesterday, the 'about' portion in my settings listed Microsoft Basic Display Adapter as my processor. This has since changed to AMD being the processor, so it seems it just took time to recognize my actual graphics card. Yet, there was no change as to how the game played. I don't know if it's relevant then, but I thought I'd mention it.
Another thing I noticed while loading up the game again is that my game is extremely dark unless it's minimized. I looked it up and it seems this is an issue people have had in the past, but I don't know how to fix it.
I tried to play another game recently, Don't Starve Together, and that was lagging really bad too (and I'd get zero lag from it normally). I only have two other games on my computer and they're Danganronpa 1&2. Neither should be a heavy game and they've always run perfect, but they're now lagging heavily.
That's leading me to believe it might be a computer issue. :# My laptop's a few years old. I just did a full wipe of it because it couldn't sign into my user accounts, but the sims still ran fine directly after the wipe. Hopefully this isn't a "need to get a new computer" issue since I just went through all the trouble of a total wipe.
Thanks!