Donald Glover's 'acting' stank!
He was so bland, it didn't seem he was even bothering to act. I felt absolutely nothing for his character. What a retrogression from the charismatic Billy Dee Williams.
Alden Ehrenreich, on the other hand, I thought did a pretty good job, given how big the shoes he had to fill were. He wasn't doing a Harrison Ford impression, but tried to reinvent the character on his own. It was a tough task to accomplish and I think he pulled it off well, given what he had to work with. Particularly the shoddy script.