He's 'having a rough time (of it)'. = He's 'going through a rough time'. [=he is having a difficult time; his life has been difficult recently]
The project still has a few 'rough edges'. [=the project still has a few things that need to be changed or finished]
Don't 'be so rough on them' [=don't punish or criticize them so harshly] for making a mistake.
(..) - Bye. - Goodbye. Listen... I'd like to apologize for my behavior the other day. This has been a rough period and... No worries. But thanks for the stuff. Fúsi! What? (..)2015 Virgin Mountain