[createinstallmedia] Mac OS Mojave boot disk creation - stuck at 'Copying to disk'

Hello,

I recently bought an ADATA S102 PRO 32GB usb drive, and trying to make it bootable so that I can install hackintosh.

However, when I entered the command in Terminal, it goes well by the beginning of 'copying to disk' stage but stuck for a long time there.. The exact position that it is stuck varies - sometimes around 30%, sometimes around 10%, etc..

My old Sandisk USB didn't do that and it worked smoothly by 100%..

I tried copying large files to my USB drive to see if it is a hardware problem, but it worked fine without any freezing during the copy. But why does it happen during the createinstallmedia command? I'm sure the USB is formatted by Mac OS Extended (Journaled) with GUID partition format.

Any ideas?