Your last point is so important also because most of us hit our tee shots after a long wait on the tee boxes where our bodies cool down and move slower. Some experienced fitters would actually not give you a chance to really warm up to see what’s the low end of your data.
I played last summer with a guy from Texas, my course waters heavy overnight. He was really upset that he wasn't getting 50 yards of roll. Really messed up his game 😊
Always have to consider the environment we compete in. Why so many tour players have multiple club configurations to choose from changing environments every week.