• Window animation scale: lower is faster
• Transition animation scale: lower is faster
• Strict mode enabled: This setting flashes the screen when an application uses the main thread to perform long, intensive operations.
• Don't keep activities: This setting destroys (as in, forces everything closed) any and every application as soon as you leave the main view.

Nothing good can come of this, regardless of what you might have heard on the Internet.

• Background process limit: Allows a custom setting of how many process can run in the background at once. Another one most of us shouldn't be fiddling with very often, if at all.
• Show Always-On-Top CPU Usage: First line with LA 1 / 5 / 15. Bars are userspace (green), kernel (red), i/o (blue)