For me, the need to do this seems to happen almost instantaneously.
This all happens instantaneously as the force is applied at 3 o'clock.
The whole thing must have happened almost instantaneously.
However, the Cambrian explosion of animals that gave rise to body fossils did not happen instantaneously.
This comparison made him curious if a state-shift happened instantaneously, or slowly.
The slip did not happen instantaneously but took place in two phases over a period of several minutes:
Because the process happened nearly instantaneously, only the final sense of dismay reached full awareness.
It seemed to happen less than instantaneously, if you can imagine that.
But then I don't anticipate total fiat collapse and it happening instantaneously.
Now, what happens in there seems to happen instantaneously.