Sometimes talking is much more efficient than spending time writing comments students read only quickly, if at all. Take up short, ungraded assignments for a daily check. You don't have to correct the commas or the misspelled words. You can just skim these papers to see if students understood the main points. You can also take attendance from the papers.
Students can work together on group writing projects.
Get the class organized into groups. Instead of grading a hundred longer papers, you may grade only thirty because the students are writing in groups. Students divide up the work, write sections of the paper, and everybody in the group gets whatever grade the paper gets. In most disciplines, as a matter of fact, professionals write collaboratively. Grade the whole and not the parts.