HOWEVER, I just found a very interesting data point. If I resize my sublime text window to something really small like 300px x 400px, typing is crazy fast with no delay. If I then adjust the height from 400px to 500px, I notice a very slight but manageable delay if I type really really fast. If I boost the window height to 600px, now the delay is starting to get to the point where I occasionally notice it at normal typing speed. This curve continues, the point where if I make it full screen 1440x900, the slowness is as I describe in my original post.
Mac users. It's not Retina or MacBook problem. I have Debian on a simple machine with average 1280x1024 Dell and it's extremely slow.
I found this thread with Google search "sublime text too slow".
I tried standard package and dev tarball. Disabling code map and switching off all the code intelligence functions. There is no plugins. I tried it on a clean X server without Desktop Environment at all. All the same. Cursor is jumping "from word to word" like in Vim if you're moving from the beginning of the word to the next one.