The Scuderia endured a dismal Zandvoort outing, with Sainz classifying fifth as team-mate Charles Leclerc retired due to floor damage.
This came after the Monegasque crashed in qualifying, with both drivers complaining that the SF-23 machine was skittish on the limit and they had "zero idea" how it would behave.
Ferrari has promised an all-new car concept for 2024 and is confident the issues are fully understood. Therefore, Sainz says, the team must just persevere with the car for the rest of the term.
He told Sky Sports: “Don’t get me wrong, we have started to understand what it is [with the handling] but there is very little margin to correct it now that the car is built and the car is pretty much done and developed.
“We know we need to change things for next year but for this year, circuits like Zandvoort and windy conditions and high downforce tracks, we are simply going to be slow.”
Source: Autosport