It's a good movie. Chase said it wouldn't be like the series. Gandolfini did almost two seasons of 'The Deuce' on HBO so he's not a new actor.
Watch the details which are funny. Like Juniors evil eye shots. His swearing almost like Tourettes Syndrome. The anger of Johnny S. Dickie's anger. Paulley's hypochondriacism when he passes the salt and pepper shakers. Syl's combover and then his 'piece', also his feminine mannerisms. Then there's the 'Junior revelation' that he put the hit on Dickie and not the guy Chris killed at Tony's behest who he told Chris killed his dad years later in the series. When baby Chris cried every time Tony came near him and the old lady saying 'baby's bring over things from the other side' when born. Little shit like that are funny and interesting.
Was it a great movie? No.