I'm bringing this post back from the dead. I experience this twice in the last week. Never had this issue before. Mine was different - I was in full auto, non sport mode. Happened on a 2-3 shift around 3200-3300 rpms. Next time it happened was at a low rpm shift point. The RPM would surge about 200-300rpms and then shift to the next gear. First time it happened was when getting on the road when the car was cold. The next time the oil temp level was at two bars. Sent the OP a PM asking if he ever got a solution but just wanted to see if anyone else has experienced yet. I have an appt tomorrow for an oil change and ELF recall, I may just bring it up to the service advisor. I doubt the tech would be able to repeat it as it doesn't happen every time.

 

I know from initial cold start I think all our isf have a rpm flare? then once the fluid is warned up its gone.

on sharp turns where you break traction control or close to it does your car remain stuck in the gear for 4-5+ seconds.
I heard this is sometimes related to lower transmission fluid if I am not wrong?

 

How do you check the fluid level? I thought it was a sealed system?

 

I was having same issue. I live where there is a lot of temperature change and I think I got a bad tank of 93 vpower. I was having weak start up too. Checked everything (MAF sensor, intake ecu reset etc) no success with anything. My car was driving like garbage, it felt like the tranny wasn't keeping up with the engine, since I was getting random drops on normal driving. So I attributed to all my rpm fluctuation to the fuel and the fuel system. In a nutshell I think I have water build up in my gas tank so I bought a fuel system cleaner/water remover. Pretty much it is isopropyl alcohol mixed with fuel. Hopefully this solves my problem. I will see if this was the actual problem when I start my car up today.