MSM1111
Bodote is correct, it is an effect of latency. And yes, even though you hear the “effect” while recording, the recorded track is clean.
However, I presume you are hearing the chorus like effect in your headphones. You are hearing direct monitoring from the IK combined with track monitoring from Cubasis.
As long as you want a clean recording, the trick is to turn off the little speaker icon next to record (input monitor). You will only hear the direct monitor built into the IK, but the track will record.
HTH!