The defending champions have won two and drawn three of their five games this domestic campaign, but Blanc insists that nothing is fundamentally wrong with his side.
"The intent is there. But tactically, technically, physically, we're not quite at our best," Blanc told reporters.
"But we expected to have a few difficulties in August and September. No-one's satisfied at the moment. But I don't think there's anything badly wrong.
"We've been having discussions, asking questions - but that doesn't mean there's anything wrong."
PSG will have the chance to put things straight when they face Lyon on Sunday evening.