Nightly Build 2219
is out now.
Performance on the Retina MacBook Pro is significantly better now. The OS X graphics pipeline appears to have fundamental inefficiencies in getting pixels onto the screen, even when using the CoreGraphics fast path (i.e., CGBlt_copyBytes). 2219 is now able to use OpenGL on OS X to transport the pixels where they need to go, which results in better performance. OpenGL is only used by default if the screen is >= 2880 pixels wide. You can force it on for other screen sizes via the gpu_window_buffer setting: if you're using a 27" or 30" screen, enabling this will likely yield dividends. I'm keen to hear about experiences enabling gpu_window_buffer on machines other than Retina MacBook Pros, although keep in mind the setting is OS X only, and you'll need to restart Sublime Text after changing it.
Also in 2219 is the minimap_scroll_to_clicked_text setting, which can be used to revert to the older minimap behavior, and copy_with_empty_selection, for those who don't like Ctrl+C / Cmd+C copying the line when no text is selected.