Max requested 4 more clicks on the FW for the 2nd stint. It was an error setup wise. Strange this was not detected on the lap to the grid. In the first laps you could already see the car would not turn in the slower sections.
This lack of front led to the graining, higher deg, resulting in slow laps just before the switch to inters.
The pace on inters could be explained again by tyre pressures. He lost when it was wetter, and started gaining significantly just before the switch back to slicks.