The problem with She-Hulk goes beyond cgi. The She-Hulk character is simply unlikeable. Shes She Hulk and has lecture-narration thats really unbearable. No pizazz! No flair! No joy! Her spunk as a petite woman comes across as ungrateful, arrogant, mean spirited, etc when she is in She Hulk form.
Marvel would have been better off giving her a bombastic fun alter persona as She Hulk because her base persona makes this show excruciating viewing.