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.
(..) I'd like to hear the rest. I still have my piece of the canyon. Ugh. (growls) Okay. It was looking rough... Oh, no bars. You mean, on your phone? Hey, you're right. Oh, more bad news. (..)2016 TvShow: The Simpsons Title: Fland Canyon Season: 27 Episode 19