I don't play on MAC so my perspective is purely from a PC Point of View; however it occurs to me, that there are some...difficulties in understanding this bug report (if that is what it's intended to be). When you say "Game time doesn't sync" where are you going to have it sync? I mean, the game clock is supposed to be universal to each world (albeit some worlds have slightly different "Time Zones"), so I'm wondering if your talking about what would be the PC Equivalent of a Processor's Clock Error, or actually mean in reference to rotational play? If you do play rotationally understand that time won't perfectly match one household to another even if you have just left one household for another.
It would also be of great help if you could test the circumstances /completely/ without Mods of any kind (including CC) so you could (for future reference) mark the bug report as "Not Now, I've removed them" for the "Are you using Mods" question. That would help people know that you've at least tested it to be something in the base game, and not one of your mods. Just posting details in the description doesn't really organize the report, either you play with mods, you play with them but removed them for testing, or you never used them (and on newer reports they also have an option for "Console - Never Used" which applies to PS3,PS4,XBOX,etc only.) After adding and removing mods, always clear your cache as instructed, but be sure to remember to uncheck any in-game options on the settings to "Enable Mods" or "Enable CC" or "Allow Script Mods"; these are the fastest most efficient ways to remove mods for testing if you play on PC, I can't speak for MAC again because I don't have one. (This assumes you use mods that don't "Replace" files. If they do replace files (manually or via injecting new code into the core sims files), you may need to reinstall the game to clear out the damage)
