Since GF is such a masterpiece and I love most everything about it, I really hate to pick apart the acting, because overall it was sensational IMHO. I agree about Sofia and Eli Wallach was kind of unintentionally comical, but I totally disagree about Connie.

She was a timid mousey type personality, who most likely was taught to never speak out, and played the part very well. I have no complaints about the acting especially as far as the main characters go.
TIS