Cubase’s very own “Standard - Drums” and “Standard - Vocals” time-stretch algorithms saved the day.
I tried multiple algorithms on drums, including Wavelab’s, and another more fancy one from a dedicated app (I can’t remember the name), and Izotope’s time-stretch in RX… and Elastique pro and MPEX… but none of them could get the transient to sound clean and natural like Cubase’s standard - drums.
And oddly enough, the same thing held true for my lead vocal track. Noticeable artifacts until I turned on Cubase’s Standard - Vocals algo.
There’s nothing standard about them. I never realized this. They are “pro”.
I listened to all the different algorithms by putting different audio material in a project. Then I stretched audio events with the time stretch tool (not the offline process). In the end I switched through the algorithms (through the field in the Info Bar).
Very revealing.
I like to keep an open mind, ie. if an algorithm is not suited for natural sounding changes I might be able to use it for sound shaping/altering.