Hello Mac simmers
After all the trouble with NVIDIA graphics cards before patch 1.63 thankfully fixed that issue, it would appear that some players with Macbooks may now encounter problems with Intel Iris Pro graphics cards.
A few people with Macbooks containing those cards have already found that they can only play the game with their graphics on the lowest settings, which means their game looks rubbish. (Some are also experiencing gameplay problems, but these may not necessarily be connected to the graphics cards.)
If you have a Macbook with Intel Iris Pro, please post your specs here and tell us if you are having any problems with graphics in your game.
Unfortunately the Intel Iris Pro card is not on the list of those supported by EA for The Sims 3, so help is unlikely to be forthcoming in that regard. However let's see if we can gather some information amongst ourselves.
13-inch Macbook Pro
BluebellFlora has advised that those with 13" Macbook Pro may have graphics issues if they have the Iris card. Please post here if that includes you so that we can confirm this. If you are being affected, try turning down all the graphics settings in-game to the lowest. Your game will look horrible but you should be able to play. Now you can try to edge some of the graphics settings up a bit to make it look nicer - you may need to make decisions on which things matter most to you. For example I would sacrifice mirror reflections to get the grass looking nicer, but that's just me. It would be great if you post your findings here for the benefit of other simmers trying to do the same. Share the knowledge!
15-inch Macbook Pro
If you have 15" Macbook Pro, you may not encounter this issue if you have bought the Macbook with the option of a dedicated graphics card. However it would be great if you could post too, for confirmation that this is the case and that you can use higher settings in your game.
Unfortunately, if you have the 15" entry-level Macbook, you may be in the same position as those with the 13" and may only have the option of the Iris card.