Brendan Fraser was in awe of costar Sadie Sink's performance.

The actor, 53, looked back at his career in a video for GQ

while discussing his latest movie The Whale,

he praised scene partner Sink, 20,

who plays his daughter in the drama.

"The fluidity that Sadie plays, this beautiful, controlled rage, was breathtaking to me," said Fraser. "

"I was constantly going up on my lines.

And that's just because I have cobwebs upstairs and I was wearing a lot of gear,

but also because I was just slack-jawed. I'm not joking."

"Watching her work — she won the game ball every day we worked, I'm telling you," he said.

There's some sort of alchemy going on in her process that makes you believe everything she does or says. ... It's astonishing."