The most common and most likely answer to this crossword clue is the 7 letter word UPTEMPO
I've seen this crossword clue in The Guardian
U
P
T
E
M
P
O
More clues leading to the result UPTEMPO
Buddy explains!

The straight part
We know that "quick" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case quick = uptempo.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does UPTEMPO mean?
UPTEMPO adjective- Having a fast tempo.
- Having an aggressive pace.
- With a fast tempo.
- With an aggressive pace.