Is there some kind of log that I can check to let me know why dua takes a very long time to complete (most of the time, I just kill it since I don't know when it will finish)

but gdu always only takes a few seconds.

Honestly, most of the time dua will just hang, like 8 out of 10 times(across several months, using different dua versions), I can not move my mouse in it, can not use Ctrl-c to quit it. I've tried using -x or not using it.

FYI:
ArchLinux
dua 2.14.7 install from Arch repo
gdu 5.12.1 install using go install