One cuts decorations down, being deliberately unproductive (5,4)

I believe the answer is:

going slow

I'm a little stuck... Click here to teach me more about this clue!

'deliberately unproductive' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'one cuts decorations down' is the wordplay.
'one cuts decorations' becomes 'goings' (I am not sure about this - if you are sure you should believe this answer much more).
'down' becomes 'low' (synonyms).
'goings'+'low'='GOING SLOW'

'being' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

Want a hint initially instead of a full solution? Install my app