Really weird first stint. Both McLaren's so slow but here it's Lando vs Leclerc vs Max.
Leclerc and Max both display a normal progression of pace. They start at a certain level, Leclerc a bit faster because he wants to break DRS. Then they both stabilize to a certain level of pace and from there their laptimes get progressively slower the deeper into the stint they go right until they pit.
Lando on the other hand, starts out with horrible performance, getting faster and faster as the stint progresses, until he too (not shown in this graph because it happened a couple of laps later), starts showing signs of tire wear and gets slower before he pits.
Other than those first 15 laps, Lando was on par or faster than Leclerc, discounting the laps stuck behind Max. Hard to gauge the second stint, because of the 5 lap tire delta, but I imagine without that it would have been on par with Leclerc.
Very bizarre car behavior. Perhaps some weird problem with taking too long to get the tires at the right operating window. Maybe an over-correction via the setup in a bid to try and improve the tire wear problems they saw in the sprint.
If it wasn't for that huge slump at the start, Lando would have overcut Max with pace alone, so it's frustrating that they couldn't get the car into the right window. The sprint format really screwed them because they did not hit the ground running from the get-go like RedBull and Ferrari did.