I understand your effort to combat "cheating". I am not a programmer but I don't see how a livery can modify the car's ability. In the same token, if you consider the populated fast laps, you will find sometimes that the top 10 are 6 to 8 seconds ahead of the majority of populated fast times. It is like this in many racing games, not just F1. Surely there is an explanation for this, not just modded liveries...
November 26, 2020. It is some overlay issue. I switched to a GEFORCE game filter to change the appearance of gameplay and my images became "transparent". I turned off the GEFORCE game filter function and image capturing is back to normal. Hope this helps.