RB has a much bigger working window. Ferrari usually loses a lot of performance when they do that. It's understeery city.
Leclerc said he is way less comfortable with the car this year and one of the biggest differences is with kerbs and elevation changes. The car is "boucing" a lot and it's extremely difficult to be consistent.
By the way, he'll probably get a penalty thanks to the embarrassing work done by the Team, as usual.