To help reduce the dirty air produced and allow cars to follow one another more closely, the design rulebook was reset for 2022 to move to ground-effects and away from complex top surfaces.
Aerodynamic development for this year has reduced the effectiveness of the shake-up, with reports it is again harder to chase through corners, but the consensus is that the rethink has been a success.
However, with the FIA reducing the length of DRS zones in the early races, combined with the dominance of Red Bull and Max Verstappen, the races have drawn criticism for a lack of excitement.
But Stella says this does not show the limitations of the ground-effects switch, but instead reflects straight-line limitations that are most prevalent at low-drag tracks like Jeddah, Spa and Monza.
The Italian engineer explained: “I wouldn't talk about limitations of the regulations.
“I think what we have observed already last year with this new generation of cars is it's definitely easier to follow in the corners [with the estimated 30% reduction in dirty air].
“So, some tracks where it was very difficult to overtake, like Hungary for instance, they are now tracks in which you can follow.
Source: Autosport