( updated to SU11, I got thin lines traces of air flow over the new Airbus A310 taking off from RJFU Nagasaki ( updated)
Do you happen to have the “show 3D thermal” turned on? Not sure if it would affect the A310, but I’d check it. Once you’re in the cockpit, open the weather tab from the tool bar at the top of the screen, and look at the bottom right side of the screen.
Regards