That might just possibly work in some colonial forms but surely, not in all… and never in British English.
Whether you might say 'It works rough' cannot have anything to do with demoes or software, development or bugs. Is that much clear?
In British English and the other forms I've heard - American, Australian, Zambian, Zimbabwean the closest you might get would be the specific dialogue:
'Is it working?'
'Uh… roughly.'
That is not at all comparable to the artificial construct:
'How is it working?'
'(Uh…) roughly.'
You might say something like 'It works, roughly' and that is not comparable, because it means 'It does work, but only roughly…'
Quite separately, what's a PM, please?