Sims 3 graphics problem

@Evie357  The biggest problem is there is only 112Mb of dedicated video memory. Actually there is no "dedicated" video memory as the integrated video chip is borrowing memory from main memory. The minimum requirement for this game is 128Mb dedicated video memory. This is designed into the motherboard and can not be changed. The flickering maybe because the video frame buffers (dedicated video memory) is cutting off causing distortion. Intel has a driver dated 5/4/2018 for that video chip. All-in-one computers make poor gaming computers due to upgading the hardware may require non standard components (usually the non standard power supply and no video slot). You may be able to adjust the dedicated video value in the bios but not all (very few) computers have this option in bios. There is a registry value us can adjust as the dedicated video memory is just a value of memory borrowed from main main as all video memory is borrowed from main memory with these integrate video chips. I don't recommend casual Windows user make changes to the registry as a damaged registry could cause the computer to become corrupt (there isn't usually a redo with a messed up registry) and there is a slim possibility this will correct the issue. The other thing to try is lowering the resolution. This will probably lower the requirements for frame buffers (less memory).  hth