Large-scale PV creation and mount take a long time.

[moonek]

It took more than 10 minutes to create 200 PVs at once and pod mount them.
First of all, it took over 8 minutes to create 200 PVs.
And it took about 2 minutes for the pod to mount. (STATUS: ContainerCreating)

First, I would like to know how to shorten the large-scale PV creation time.
And I'm curious that Pod mount starts after all PVs are created.
(I expected that pods for which PV creation was completed would be mounted sequentially.)

I wonder if options for tuning are provided or if feature development is required.