I dont claim to know a lot about computers, but I have seen framerate issues; this is not at all what I am experiancing. What is happening is sporatic and erratic and not sensible at all. I don't run any action that is strenuous like moving the camera from one end of town to another, or having several sims dancing and interacting at a nightclub full of people; just my sim sitting at his or her computer alone in their house trying to finish a book. It will run great for a few minutes then freeze for ten to fifteen seconds in place. The sound would continue, and the 2 dimensional animations for in-game tv or video games continue,but my sims action freezes in place. This makes no sense to me. I have a pretty wicked computer with a fairly crappy video card; this seems to be the trend. If this is a video card problem please someone tell me because that is relatively easy to fix.
AMD Phenom 9750 Quad core 2.40 Ghz
8GB Kingston heatsinked RAM on 4 2GB chips
Windows 7 Home Premium 64 Bit
NVidia GeForce 210 with 1GB DDR3 dedicated Video RAM