The Mexican had a poor Q2 session and started 12th, with the team then opting for a one-stop strategy starting on the hard tyres in an attempt to boost him up the order.
While he made good progress, he got caught behind the Ferraris of Charles Leclerc and Carlos Sainz. They also pitted only once but ran an opposite strategy with an opening stint in mediums.
Right at the end of the race, Perez had enough of a gap on the cars behind to be able to pit for fresh tyres and secure the fastest lap bonus point.
“Well I feel that there was a little bit more certainly,” said Perez when asked by Autosport if he could have done better than sixth.
“But we just didn't have the pace today. We did struggle.
“I think we got hurt massively with the safety car, that it came at the wrong moment for us. Luck is not with us at the moment, but it's how it is at the moment.”
Asked about his underlying struggle for pace over the Montreal weekend, Perez was clear about the main problem.
“Basically under braking,” he replied. “I think the ride hasn't been great, so under braking I think was the biggest thing.
Source: Autosport