“We came into camp on Tuesday this week and you could see the frustration from the players,” Lynn said.
“One thing I’ve said to the girls and staff this week, we’ve got 80 minutes to put that right. We haven’t next week.
“So going into Italy, it’s about an 80-minute performance, putting everything right, pulling it together from Ireland, but taking the positives that we’ve had from Scotland, France and England.”
Italy arrive in Cardiff having backed up a convincing win over Scotland by scoring five tries against world champions England.
And Lynn knows Wales will need to be defensively sound against a side which put a record score on Wales in last year’s final round in Parma.
“You don’t get a free-flowing attacking team if you can make sure you’re winning the collisions,” he said.
“If you’re looking at a small win against Ireland, we gave them the slowest ruck speed in the tournament so far. So it’s making sure that we can be competitive in that area to slow them up and keep that consistency.”
