If you like performance-related courses you may have an easier time with Speech Communication. However, the grade is not based on effort. It is frustrating to know that you put in hours and hours on a speech that got a B when you know a classmate that threw his together in a hurry and got an A. That happens. Because the grade is on the final product. Some people have a knack of getting a good grade on a test without studying as long as others.
Some students can write a paper in less time than another student.
I hope that that will not frustrate you too much if you are one of the latter. But that is sometimes not good enough for a student used to earning As. That can be very frustrating. The difference between a B speech and an A speech is often intangibles such as enthusiasm, confidence, and originality. But most of what makes a good speech can be achieved through thoughtful preparation and rehearsal.