Unplayable amount of lag that leads to crash

So I've been having random issues playing TS4 for nearing a year now, when previously I had no issues. During my attempts at repairing the issue, I found what I believe was my GPU dying off, so I picked up a new one and installed it. At the same time, I attempted to install a new Samsung SSD that I got for free (came with my husbands new monitor), and it caused a massive amount of issues that let to me removing the SSD and doing a complete wipe of my computer and reinstalling windows using a USB stick. 

After the wipe, everything seemed to work again, until now. I don't go on my computer often, only a few times a month, so after downloading the latest updates, excited to try to go for this birthday cake item, I found my game was lagging so hard. Sometimes upon trying to open, I'd get a white screen, sometimes a green gem where it would freeze, sometimes music. After using NVIDIA to adjust game graphics to medium, (Previously it was high), I finally got to the title screen. Deleted all old saves and tried to make a new one, froze during create-a-sim. Cleared the cache, repaired the game, tried again. Got through create-a-sim but just barely. Game froze on the loading screen after selecting a home. Deleted all game files and redownloaded, ran DISM health scans and repairs, no errors resulted. ran SRC scan, no errors resulted. I don't know what else to try at this point, and I'm so frustrated I could cry.

I don't use mods, but I have a significant amount of packs that I've bought over the years. I've been able to run the game with all of my packs just fine until now, what the heck is going on? Attaching my dxdiag.