The problem is, aside from the car's aversion against medium speed turns and high temps, is, like Hulk and Ric said, that the aero developpement on this RS.18B is very conservative, minimalistic and slow (and non existant since 2 gp: GER and HUN).
The updates the other teams bring often look more agressive and imaginative than the Renault ones... and I'm not talking about Ferrari or Merc, I'm talking about STR, Alfa, RP and Mclaren.
Not to mention the developpement rate and frequency...
Obviously a more complex or agressive update isnt necessarily more "effective", but that's the reason this team is struggling in that midfield where every tenth counts.
Just look at the first cape Alfa brought (and the related changes they brought to the nose - a nose that already was much more complex than the RS.18B) and the Renault cape. That just an example amougst that group of teams.
Many new parts look outdated from the get go on this car.
https://sf.viepratique.fr/wp-content/up ... o-cape.jpg
There is probably a corelation problem (the French gp updates didnt bring the expected gains*) that urged the team to suspend the developpement for a while and try to undrstand the issues...
*but they and the car worked quite well in Silverstone...
That looks like it would be a disaster for keeping the air attached nicely to the top of the floor!?
