Sims 3 -Sims not rendering
Sims 3 Characters not rendering. The game is playing OK but it begins to slow down. I have 3 resorts, and there are only a couple of Sims that show onscreen. My characters/family are rendering, but other Sims are not. The resorts are showing fully occupied and they are making money. There have been doors opening/closing by themselves, and my characters have had conversations with invisible Sims. Sometimes a Sim is only partially visible, like feet with a floating head. Some of the resort staff is invisible as well, there was a mop mopping the floor with no maintenance Sim in sight. Is my computer just starting to get to be too old to run the program? I'm running Windows 7 Home Premium 64 Bit, 8 Gb memory, Intel 2 Quad CPU 2.5 GHz, Display adapter is AMD Radeon HD 5770