Marshawn Lynch thinks the biopic about his life growing up in Oakland is TERRIBLE and is demanding wholesale changes to the project before it can be released ... TMZ Sports has learned.

A four-minute-plus "promo" for "Family First the Marshawn Lynch Story" -- which stars Lynch as himself -- was released Tuesday and we're told Marshawn went Beast Mode when he saw it ... in a bad way.

"It was the quality, It doesn't look like some sh*t nobody would want their name attached to" ... one source close to Marshawn tells us.

We're told Marshawn thought the film (which was his idea) was going to look like a big budget Hollywood affair ... but, in his cinematic opinion, ultimately felt the sound, editing, and lighting were "not good at all."

The news came as a shock to the film's director Mario Bobino -- who says he was blindsided by Marshawn's less-than-encouraging take on the project.

"I've known Marshawn his whole life. All of the sudden he's mad at me and now doesn't want the film to see the light of day. I'm upset by this because he fully committed to see the project through and now he wants out," Bobino tells us.

Mario says he met with some of Lynch's reps Wednesday and temporarily agreed to remove the clip from the Internet while he makes some changes ... but insists the movie is coming out "no matter what."

He also claims the mega rich NFL superstar's actions are hurting the other actors who appear in the movie ... including family members.