When I'm in 1st gear and about to switch into N, I would clutch in and let go of gas pedal at the same time. When I let go of gas pedal and clutch in at the same time, I can hear this very faint sound like the engine is going to stall. This happens sometimes when I'm shifting from 1st to 2nd also.

I realized that if I let go of the gas pedal slower while I clutch, this doesn't happen. Is this the CDV or is it because I'm not used to the engagement point of the clutch and letting go of gas pedal too fast?

First manual car that is not Japanese. I find that the clutch feel on Japanese cars is different than German cars. I like them all.