Question

In the following lines from Act I, scene i of King Lear, what kind of intent is a "fast intent"?

Know that we have divided
In three our kingdom, and 'tis our fast intent
To shake all cares and business from our age,
Conferring them on younger strengths while we
Unburdened crawl toward death.

one that takes place quickly

one that he will not budge from

one that he has thought about for a long time

one that is most important to him