Hi Nathi,
yeah it’s been a while since I’ve used Mac, but to me this looks like it’s rendering to the size of the camera.
Because we are doing a triple view, the cameras have a weird resolution. This might not be playing nicely with Macintosh.
CTRL Numpad plus will zoom in
But try resetting the render resolution to 1920×1080 and seeing if that makes a difference to the playblast.
If you have a spare 4 mins – have you seen me being an idiot in this video?
It might help.
https://www.youtube.com/watch?v=rrtAD2s1qA0