I've noticed brown dirt building up on the racing line. I assume it's dirt and not marbles since it's brown. Sometimes it is off the racing line. Sometimes it is on the racing line. It makes it difficult to see where the actual racing line is. Watching real races, I've noticed marbles building up off the racing line but never brown dirt It just strikes me as odd. Anyone else? Most recent example I saw was racing Formula USA 2023 at Suzuki. 30 cars. 20 min race
