Swansea City boss Graham Potter apologised to the 1,800 members of the Jack Army who made the trip to Loftus Road after his side were beaten 4-0 by QPR.
The Swans never recovered from a nightmare start as Darnell Furlong and Tomer Hemed had the hosts two goals to the good inside five minutes.
Hemed added the third on 17 minutes, with Massimo Luongo compounding the visitors' misery after the break.
It brought Swansea's impressive run of three wins in a row crashing to a halt, and they have now lost their last seven away games in succession.
And manager Potter readily acknowledged the performance in west London had not been good enough.
"We don't need to throw out everything that we are good at, but clearly away from home we need to find a way (to get results)," said Potter.
"I think today we did not understand that their pressure was coming high, we did not turn their back four at any point really and we invited a bit of pressure on us.
"Having said that, when you are 2-0 down after five minutes, and a goal down after two or three minutes the home team are up, the home fans get up and it is difficult.
"It's an experience for us that is not pleasant and I have to say sorry to the fans behind the goal.
"The supporters came in great numbers to support us and we wanted a better afternoon for them.
"You can see it was not for a lack of trying but we conceded goals and it was a bit weak from us in the end."