I have hit the rev limiter several times because of the delay when using the DSC. I think the DSC was an afterthought (Cadillac is just trying to keep up with the competition until the new CTS comes out) and the transmission was never really designed to be driven with a DSC. I drove an Infiniti G35 with the DSC and the G35 shifted immediately. I know I should have bought a manual transmission, but I have a wife, so this car is a compromise of what I want and what she wants, but if Cadillac wants to keep drivers like me, they need to make a product that is better (not just keeping up) than their competition. I am not expecting that and have quit using my GM card. Needless to say, after a year with my CTS, I am a bit disappointed.