Slow loading and lags

@Gingerjuggernaut 

Probable reasons:
1.Cause - damaged files inside the game folder/ Documents.
Delete localthumbcache.package file in the game folder and fix the game in Origin.
If it will not work try doing a factory reset as is described here
http://answers.ea.com/t5/The-Sims-4/FAQ-Troubleshooting-Steps-amp-Known-Issues/m-p/3621199
2. Cause -outdated mods or CC
If you have any mods
Move the mods folder to the desktop.
Delete localthumbcache.package file in the game folder
Fix the game in Origin.
Turn on the game to create a new, empty mods folder. Check if a game is working now without mods.
Then copy from desktop your mods and CC and paste it in the new mods folder. First, paste script mods every time checking if the game is OK. Do the same with CC but if you have a lot of this, try the 50/50 method
3. Cause - connection with the internet.
Unknown program in the background that connects to the internet lowers FPS rate. It is so low, that to play is near impossible
Disconnect your internet completely and try without this.
4. Cause - problems with the computer (The computer does not meet the requirements of the game, failure Windows updates. week graphic card, outdated graphics card drivers, software failures, the ventilation system is dirty and the computer overheats when it is working hard)
Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/
You can attach the text file to your post directly in option "Reply" - not Quick Reply

I don't work for EA