Snap to Grid Text & Hi-DPI

[J. Baker]

How does one get the text to snap to the grid?

Also, is there an option for hi-dpi user interface?

How to center a layer or text? Whether it be vertical or horizontal. Are there guides that can pop-up when your center while dragging?

EDIT:
Maybe it's the grid snapping that I'm confused about. Doesn't seem to work as expected. Even if I set the distance to snap to 100, it just still functions the same.