It's lag. Look carefully; the same planes that turn suddenly with only 3 motion animation frames in a turn (zoom!) are the same planes that suddenly hold position, straight as an arrow, even though they are banked (impossible flight dynamics). What you see is old data... old data... old data... then suddenly the data finally streams but skips frames so it looks like a 200mph turnaround.
Manfred
P.S.: Matka, if you're going to accuse people of abusing the game, write down names or take a screenshot, and report to Blacklist thread. It would be more productive I think, and lead to some action.