The Dutchman, who has since left the Envision team after four years at the squad to join Abt for next season, had enjoyed strong form in the opening flurry of rounds and visited the podium three times in the opening five races.
Following his fourth at Monaco, Envision kitted Frijns out with a new set of brakes and with a tweak to the overall braking software, but he struggled to find the same feeling with subsequent sets.
