Dietpi - hanging on restart

when I was testing my application to run on rasp-pi-4 8gb, via hp -usb drive
everything was working good i.e
quick boot,
plymouth animated splash screens,
and when I did reboot, it showed splash screen too for some time

but now my hands are on rasp-pi-4 1gb, via same ht -usb drive
but
boot is lagging and showing mmc1: Controller never released inhibit bit(s) for quite a while and
after that, it just shows one image from the animated splash screen for like 10s
and then it starts my application
also when i reboot, splash screen is fully gone

and surprisingly my entire boot process is taking 3-4 mins

What do these report?

systemd-analyze blame
systemd-analyze critical-chain