The Rs boss dismisses as "unacceptable" the opening-day performance that saw his side humbled 5-0 at home by Michael Laudrup's Swans, with Michu and Nathan Dyer at the double
Michu and Nathan Dyer scored two each before Scott Sinclair put the finishing touch on a nightmare start for the Rs at Loftus Road, the home side putting in what their boss described as an "embarrassing" performance.
"If you're not careful it can be embarrassing if you're two or three behind and you're chasing the game," Hughes told BBC Sport after the game. "It certainly did [embarrass me] today.
"A number of individuals did OK but the team performance was nowhere near where it needed to be.
"You can make all the excuses you want, but it doesn't wash with me. It's unacceptable and highlights [that] there are players who are not where they need to be.
"We chased the game when we didn't have to. We became ragged and made bad decisions and we're desperately disappointed with that.
"In the end we didn't deserve anything from the game so we have to improve remarkably.
"We've been riding on the crest of goodwill, but we fell flat on our faces. It is a wake-up call for us."
The Swans' first goal, scored by Michu, was aided by debutant goalkeeper Robert Green's error in allowing it to slide underneath his body, but Hughes was keen not to single out the mistake.
"He will be disappointed with that, but I was more concerned with what was happening in front of him," the Welshman declared.
"It might be the making of us, to be honest," he continued optimistically. "All in all, it is a poor start to the season but it could be a blessing; get it out of the way, get it out of the system, and come back."