Normal boot with save.dat file is OK. But Always Fresh is taking long to load DE.
From reading from here and there I found that in another forum:
Porteus 4.0 x86_64 XFCE, Cinnamon, tested with kernel 4.20, 5.0.10 and 5.0.12.The system has long reached its default boot target before the kernel gathered enough entropy to initialize the pool.
Due to systemd requiring entropy at an early stage, it may happen though that the pool is depleted in the boot process without further kernel warnings.
update: I take haveged-1.9.2-x86_64 from USM and put it in base folder, then I added cliexec=haveged~start in porteus.cfg and voila!
Now Always Fresh boots for 15 sec.
If someone has encountered a similar problem it can help!