The R's have made a rather middling start to life in the Championship, with some highly credible results tarnished by heavy defeats.
And Hinchcliffe feels that this inconsistency could plague QPR's season this term, with so much change happening at Loftus Road over the summer.
"That might be the story of QPR's season - peaks and troughs, purely because of the change in philosophy, with Chris Ramsey now in charge, coupled with the big turnaround in personnel and the squad getting to know each other," he said to Sky Sports.
"They will get stronger as the season progresses, but they may just miss out on the play-offs. Saying that, if it doesn't happen this season, I expect them to be strong contenders next."
QPR are currently in 11th place in the Championship, and their opening to the new campaign has seen frustrations rise at the club.
Although the R's won their last match 4-3 against Bolton Wanderers, the shambolic nature of their defending throughout the campaign has been concerning.
No team in the Championship have conceded more goals than QPR this term, and a 4-0 defeat against near neighbours Fulham was the low point of the season so far.
It leaves Chris Ramsey with a lot to work on over the international break, before the London outfit return to action with a match against Birmingham City in two weeks' time.