This movie's biggest flaw
Overall I really liked this film. Having read The Disaster Artist there were certain elements I wish had been adapted more accurately but I've never seen a biopic that didn't take significant liberties with the truth.
But for me the biggest flaw was with Dave Franco. He's a fine actor and a good looking guy but physically he is just much smaller in stature than the real Greg Sestero. If they wanted to have Dave playing the part, they should've just owned the fact that the two bear no resemblance to one another and let him just play the part looking like himself. Him being done up to look like Greg, particularly with the longer hair (wig?) and beard, made him look like a kid dressed up as Mark from The Room. Where James Franco truly morphed into Tommy Wiseau, Dave Franco in costume was distracting because he looked so unnatural.
The wig on Josh Hutchinson was also distracting but he had a much smaller part so it wasn't as noticeable. Still give this film a thumbs up, but it's not quite perfect.