Arsène Wenger says his team can find the extra "degree" in their game and discover their best form.
Arsenal have drawn five of their eight Premier League matches this season and needed a last-minute equaliser to rescue a point against Hull City last weekend.
The manager admits the first two months of the campaign have been "frustrating" at times, but he remains confident that results will improve when his new-look side settles.
"I think 95 per cent is there. It is normal that after a World Cup, and [when you] have new players. You see the main thing is there: the attitude, the quality"
"It is frustrating, but we have to play better," he said. "That is how we have to think.
"We dominate our games. It is just when we have a weaker moment we pay for it. That is why I think we have to produce more effort defensively as a team.
"We could be more efficient offensively and defensively, but that will come. I can understand that better because there are players who are new.
"I think as well we are never for a long time in positions where we have the lead, we are always chasing back. Of course that makes it more difficult offensively.
"For example against Hull we were 1-0 up and suddenly we are 2-1 down. But if we score the second goal they have to come out. And with our players we are comfortable on the break.
"I think 95 per cent is there. It is normal that after a World Cup, and [when you] have new players. You see the main thing is there: the attitude, the quality. But the water boils at 100 degrees and not at 99, and we have to add that degree."
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