Coach Paul Anderson was not satisfied after Huddersfield closed the gap on Super League leaders Wigan with a 60-16 thrashing of Catalan Dragons.
Winger Jermaine McGillvary and England forward Brett Ferres both scored hat-tricks in the second-half as the Giants exploited a dismal display from the Dragons.
But Anderson felt his side also let their standards slip in an uncompetitive encounter.
"We just did enough," Anderson said. "I thought in the game as a whole there
was a lack of intensity from both teams.
"I said to them at half-time they had to make a conscious decision about what they wanted from this game - did we want the game to be 40-30 either way or did we want to put 40,50, 60 on a good team because we knew we were capable of it.
"Thankfully we made the right decision, although I still thought even in the second half there was low energy. When we were scoring tries, we were walking back to receive kick-offs.
"There were strange emotions. I am sat in the stand kicking chairs wondering what's going on here and you look at the scoreboard and it's 60, so we obviously did something right."
The Giants' win was marred by an injury to Craig Kopczak, but Anderson hopes he has only suffered a minor injury.
"It's a potential ruptured bicep so we hope it's not as bad as first feared," he said.
Catalans coach Laurent Frayssinous was bitterly disappointed with his side's woeful defensive performance.
"Even in the first half we scored some tries because their defence wasn't great," he said. "But our defence got worse, from the first minute to the last.
"You win a game with your defence but something was wrong for us tonight.
"I said at half-time there was no aggression or arm wrestle, it was touch football.
"I don't need to name players, we all took some short cuts and I don't like that.
"But credit to Huddersfield, they are a good team and they were too strong, too fast for us tonight."