Slow Factory SQL

There are few things i want to know.

  1. I think there is issue with third party OPC server .But my question is factory SQL design like that if there is issue with one group it will hang the complete FSQL.(I admit FSQL is much better than other logging software’s’)
  2. I am facing one issue. By mistake i created 2 folders with same name. Now when i delete one of them and save my project but when i open factory SQL front end it show me that folder again.
  3. I am getting “Write error” occured but at the next trigger grou[ executed without anu issue