PS4 wasnt too terrible but jumping back to PS3... wow I completely forgot how memory starved that machine was. Working on it, we knew at the time but in retro spect it was just horrible.

Small RAM space with the hard CPU/GPU split (so no reallocation) feeding off a slow HDD which is being fed by an even slower Bluray disc, you are sitting around for a while.

PS3 loading times IME were better than the PS4.