The former West Ham United shot-stopper has let in a total of six goals in the first two matches of the season, including a heavy 5-0 defeat to Swansea City and a 1-1 draw with Norwich City at the weekend.
"He forgot things quickly, that is the good thing. Against Norwich, he was calm so it is good for us," Sky Sports News quotes Park as saying. "We have only had two games. He has the ability so we just leave him and give him the confidence."
QPR's next Premier League fixture is an away trip to Manchester City on Saturday.