Oh my goodness, I'm sorry I didn't realize you were still having issues with your game. Or I would have offered more tips.
Deleting the cache files help as well. I have a habit of doing that either after I am done for the evening or just before I start playing. I also try to keep my Sims 3 folder clean. This helps to save space and helps boost game performance. You may have read about me talking about this before, so please forgive any repeated information.
I like to save my Sims 3 folder to the desktop, usb key or external hard drive and then clean out the folder.
I like to delete the files that are in:
DCBackup: except for the ccmerged.package file. The file helps your store and other .Sims3Pack files work properly when installed via the Sims 3 Launcher.
Downloads: These files can be removed from this folder after being installed.
Exports: The files can be removed from this folder.
Library: After you've got Sims and lots installed into your save, you can remove these files.
Recorded Videos: The files in this folder can be removed.
Saved Sims: The files in this folder can be removed after added to your save file.
Saves: Keep only a few (a handful) current saves in the folder. The rest can be removed to help game performance.
Screenshots: Can be removed
UserPresets.package This file can be deleted from time to time. Specially if Create a Style is lagging. However, please remember any textures, colors saved will be removed from CAST.
If you would like to learn more about Sims 3 user files, please see Crinrict's article:
https://sims3.crinrict.com/en/2011/01/faq-user-files.htmlHere are a couple other tip posts I've put together that maybe of help.
Tips to Relieve Lag and Freezing:
https://www.carls-sims-4-guide.com/forum/index.php?topic=20732.msg422978#msg422978Gameplay Tips and How-tos:
https://www.carls-sims-4-guide.com/forum/index.php?topic=26289.msg439048#msg439048