Williams tech boss Paddy Lowe admits the integration of the mandatory Halo cockpit safety device into next year's car has been challenging.
The controversial new component will forever change Formula 1's aesthetics from next season, but so far it's incorporation has been a difficult process.
"It's a big project to put that in the car," Lowe told Motorsport.com.
"We're still working on it, and the integration is quite difficult. There are very high loads to accommodate, so I think the bigger impact is structural rather than aerodynamic."
As each team works on the device's incorporation, Lowe believes only minimal performance gains are on the cards.
"There is some performance [in it] I guess," said the Williams boss.
"Probably the major area is how efficiently you can provide the mounting requirements to meet the loads – how much weight do you have to throw at that problem? Because it's all weight.
"There are some minor aerodynamic effects. We haven't seen it as a huge project – the detriment is not particularly large. There is some room for manoeuvre there, but not a lot."
Gallery: The beautiful wives and girlfriends of F1 drivers
Keep up to date with all the F1 news via Facebook and Twitter
The Spanish Grand Prix’s future home is still surrounded by construction barriers, deadlines and heavy…
Helmut Marko has revealed that Max Verstappen’s in-season promotion from Toro Rosso to Red Bull…
On this day in 1999 in Monaco, a dominant Michael Schumacher secured his 35th career…
Sometimes at the Indianapolis Motor Speedway, speed doesn’t build gradually – it arrives like it…
Nearly two decades after its last high-speed venture in Formula 1, American computing giant Intel…
Max Verstappen’s Nürburgring 24 Hours debut is already delivering the kind of storyline only he…