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. Thank you. Thank you so much. We'll take a really short break, and we'll see you in a minute. Hi. Uh, champagne. Thanks. I got it. Have a rough night? Um, I'm going to that place, that sushi place in Daikanyama. You wanna come? Yeah, but I can't right now. #Midnight at the oasis # (..)2003 Lost in Translation