Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: http://answers.ea.com/t5/The-Sims-3/HOW-TO-DxDiag-for-Sims-3-PC-Only/td-p/1049584/
I'm having similar problems, though I only have the base game, Pets, Seasons, Showtime, and Supernatural installed. I have no custom content other than a few objects and clothes from the EA store.]
More details about my computer
Component Details Subscore Base score Processor Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz 7.7 5.9 Determined by lowest subscore Memory (RAM) 8.00 GB 7.8 Graphics Intel(R) HD Graphics 4000 6.6 Gaming graphics 1760 MB Total available graphics memory 6.6 Primary hard disk 288GB Free (373GB Total) 5.9 Windows 7 Home Premium
System
Manufacturer ASUSTeK Computer INC. Model CM6731_CM6431_CM6331 Total amount of system memory 8.00 GB RAM System type 64-bit operating system Number of processor cores 4 Storage
Total size of hard disk(s) 913 GB Disk partition (C🙂 288 GB Free (373 GB Total) Disk partition (D🙂 540 GB Free (540 GB Total) Media drive (F🙂 CD/DVD Graphics
Display adapter type Intel(R) HD Graphics 4000 Total available graphics memory 1760 MB Dedicated graphics memory 256 MB Dedicated system memory 0 MB Shared system memory 1504 MB Display adapter driver version 8.15.10.2669 Primary monitor resolution 1280x1024 DirectX version DirectX 10 Network
Network Adapter Realtek PCIe GBE Family Controller Network Adapter Linksys AE2500
Try lowering your graphics settings. What is the date of the driver of your graphics chip ? May need updating.
how do you lower your graphics settings
