Sorry newbie question here. I have a questions about my 2021 Goldwing DCT Tour with Roadsmith conversion.

When riding, I feel that the bike lightly drags when upshifting in 5-6-7th gear, also the sound is like when you are taking off on an airplane the ( “plane turbine sound) not super loud but that comes up between when shifting 5-6-7th gear and then when the rpms drops in 7th gear (2300-2500 rpms) then the sound is very low and normal. Is that a characteristic of a DCT transmission. Btw the transmission does shift smoothly.