I find that having aim assist off on console games is a lot more frustrating, it's probably because I'm used to the quick, snappy precision of a mouse and keyboard but I find myself struggling much more not using aim assist on a controller.
On average, though, a decision for an initial disability claim takes three to four months, and a reconsideration (the first level of appeal) takes about as long, though a case could be decided much sooner or much later.
You can apply for Social Security disability benefits when you become disabled, even on the day you become disabled. What is important, and where the 12 months comes from, is that your disability must be expected to last at least 12 months (or result in death).