[BB update 3/BB 4] Performance issues on OS X

Don't know where output_log.txt is on OS X.

I have a 2017 macbook pro, running game on 1680x1050, and modest settings elsewhere (e.g. MSAA 1x). I can get smooth gameplay when just running around or in combat, but in some menus and screens (most notably character creation) I get extremely poor performance. I don't know if this is just some optimization that still needs to be worked out, but it just strikes me as bizarre that character creation is an excruciating scenario, but combat with lots of VFX is not.