While the Spaniard logged eight podiums, Stroll's best result was a fourth in the high-attrition Australian Grand Prix.
However, after struggling to come to terms with the AMR23 for much of the year, Stroll finished the season on a high with solid fifth places in Brazil and Las Vegas.
Stroll says those late-season results were a reflection of him feeling more comfortable with the car as changes made it more to his liking.
"It feels good to do well, for sure," he said.
"But I knew that if I feel the platform working well underneath me, and I can drive the car freely without kind of dealing and driving around things that inherently bothered me in the car, I'd be at a good level and I'd get the most out of myself.
"And I know that for a few months with changes that were made, there were weekends where I just couldn't get into that place where I felt free in the car, and I can just drive at my best. Because it just wasn't behaving the way I wanted.
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"And at this level when you have those issues, when the car is just not behaving how you want inherently, and it doesn't agree with your driving style, it won't work.
"And I think in those moments you can't put the doubt on yourself.
Source: Autosport