First time out at the Sochi Autodrom, Lance Stroll acknowledges that there is still improvements to come and that "is generally from my side."
The Williams rookie had his first taste of the Russian circuit on Friday, covering 66 laps.
Although inside the top ten in FP1, he fell well down the order in the second session, finishing 19th of the 20 runners.
Stroll's best time in FP2, a 1:37.747, was 1.5s shy of team-mate Felipe Massa's best.
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"It is a bit strange here as it is not one timed lap and then the tyre goes away, it builds up a lot," he said.
"So we need to figure out how to deliver the lap time when the tyre is at its best.
"There is still improvement to come, and that is generally from my side, as it is my first time here and I am just getting the car set up the way I want.
"And I didn't use the ultra softs as I am saving them for tomorrow. That will give me a much better feeling and I will try to get in some good runs.
"We have not decided our strategy for the race yet, but it is low grip here and the degradation doesn't look high, so we will have to see what approach is best."
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