February 2022
I recently began playing TS3 on my Mac, and I'm having many of the common issues as well as a few uncommon ones. Primarily, I am concerned with the poor graphics/textures I'm seeing (blocky shadows, blocky lashes) and high detailed lots setting not doing anything. Thanks to a forum post, I found that changing the setting to 6 allows for 2 lots to become high detailed, but it does not display any more than that.
I'm playing on macOS Monterey (24-inch, M1, 2021) with 16 GB of memory and an Apple M1 chip.
February 2022
@errolr1 These issues aren't limited to M1 chips. The blocky eyelashes affects everyone:
The blocky shadows is just as significant an issue in the 32-bit version and even affects the game in Windows, although usually to a lesser extent. I believe it's just how the game was made.
The high-detailed lots issue is annoying, but for performance reasons, it's best to leave that setting in the 2-4 range anyway. Even though the game is 64-bit, its engine still isn't all that stable.