What's behind Red Bull's "hit-and-miss" issues during first test of crucial F1 upgrade?

Red Bull did not yet get a clear picture during Friday practice in Spielberg of what Max Verstappen described as a “crucial” upgrade package for the RB22.<br>The Dutchman finished fourth in both sessions at the Red Bull Ring, eventually ending up more than half a second behind pace-setter Kimi Antonelli.<br>Read Also:<br><br><br>Formula 1F1 Austrian GP: Antonelli completes perfect Friday by ...<a class='more' href='https://www.autosport.com/f1/news/why-red-bull-suffered-hit-and-miss-issues-during-first-test-of-crucial-f1-upgrade/10833740/?utm_source=RSS&utm_medium=referral&utm_campaign=RSS-F1&utm_term=News&utm_content=uk'>Keep reading</a>