@iyoung91 I have two Macs that can run the 64-bit version of Sims 3, and I only play in Windows because I can't deal with all the Mac version's issues. For me, the stuttering and other graphics oddities alone make it worth using Windows, but there are also a number of bugs that only exist in the 64-bit Mac version. Most of them are listed here:
https://answers.ea.com/t5/Technical-Issues-Mac/A-partial-guide-to-64-bit-Sims-3-for-macOS-in-progress/m-p/9656814#M11442
I can't guarantee you that a Windows laptop would run the game perfectly—I've seen a few players with inexplicable issues that are difficult to address—but the game should run the game quite well as long as you're dealing with a true gaming laptop. (As in, you're getting a dedicated graphics card made in the last few years and not one of Nvidia's MX series.) Just get one that you can return in the first few days if need be, and you'll be fine.
I would recommend staying away from 12th-gen Intel processors though. The game doesn't load correctly on these CPUs, and while there are workarounds, it's better not to need one. On the other hand, if a laptop with a 12th-gen Intel CPU is exactly what you want in every other way, using one of the workarounds should only be a minor inconvenience.
As for whether the issues with the 64-bit Mac version will ever be addressed, my guess would be no. For a long time, it looked like there would be a second, more comprehensive patch for this version, and EA has never come out and said that's off the table, but it's been 20 months at this point. And even that patch would probably only address problems like the missing open water options and the red flashing effects, not the shadows or skin textures. Those might require overhauling the graphics engine or at least creating new textures, which would basically mean a remaster or even a remake.