Don t stop going just because you think everyone in your discussion is a moron. More common is the problem of foreign TAs. What you ve heard of TAs who barely speak English is partly true, though surely exaggerated. There are definitely TAs like that here at Madison, but they are not the norm. Most of the TAs are very good teachers.
Most classes have a number of times for the discussions.
If the problem is the group or time and not the TA, ask the TA if you can join another section. You may be able to switch TAs. You might be able to switch into a section with another TA if you are having trouble with your current one. Of course this requires twice the time for you. You can go talk to the professor.