112% race time rule
From The GPRO Wiki
If you don't cover 112% of the group winner's race time you will receive only 50% of the race income according to the Race Winnings Table.
Example: If you finished in 40th position in Elite and didn't cover 112% of the group winner's race time you will get only $5.500.000 for your race position.
This rule does not apply to Rookie groups.
GPRO race screen anomalies
GPRO races are time based and last to the final lap for everyone even if you are lapped by the leader. In case your car retires from the race due to a start crash, puncture or technical problems, your time gap to the leader of the race (and thereby total race time) increases for every lap your car has failed to complete.