Valtteri lined up fifth on the grid and made up ground at the start, but struggled with tyre wear during the race and ended up finishing where he started on a three-stop strategy.
"It was a tough race," he concedes. "The start of the race was actually pretty good, but then we started to struggle with the tyres. It was challenging.
"We did everything that was possible. We need to make sure we learn from this weekend. We were not quick enough, and our tyres were degrading too quickly."
But, why was that the case? "I really do not know. We didn't expect the tyres to be so fragile. Tyre life was pretty poor.
"We ended up doing three stops, which is two stops more than we predicted. I tried to manage the tyres, and I made sure not to slide, but they still just fell apart."
The rapid degradation prompted the third stop for Valtteri, switching over to HyperSofts. "My tyres were gone, and there was no risk as Nico Hülkenberg was one lap behind," he explained. "I think most teams struggled a bit, but maybe not as much as we did, so we will have to investigate."