Transmission flaring in Kia Optima

My 2005 Kia Optima 2.7-litre V6 sedan has done 34,000 km and hasn't missed a beat since I purchased it, but there is a problem of the auto transmission flaring. I am not a leadfoot, but accelerating normally causes the engine to race, until eventually the car catches up to the engine. When I contacted Kia about this they said it was normal because it was an "intuitive" transmission. I also had it driven by an independent transmission specialist who drove it so aggressively that it smothered the problem. A new Magna that I had with the same problem was fixed with a change of trans oil. Would this help or is there a computer fixit?