@terrytheirate said:
...have been looking for something that uses 64bit and can be used on a Mac. I have 16gb of ram, but Kerkythea is 32bit. 😢
You should take a look at Thea Render... 😉
(EDIT: Aaahhh... You're on Mac... Thea Render is only available as 32-bit for Mac, but there's already a 64-bit for both Win and Linux...)