PS3 can't really handle mods that increase spawns. Framerate suffers with more npc's etc in an area and if your save is large enough in size then such a mod is more likely to crash the game.
Maybe a faster respawn mod would be ok (change from 3 days or whatever to 24 hours), but all that is doing is changing wait/sleep time from 3 days to 1
There's a also a tweak that removes fog from dungeons, actually rather handy on PS3 as the fog is just something extra taxing the system. Removing it is beneficial.
I run
quiet feet max as well, it basically removes foot steps audio of 4 legged creatures including horses. Audio for those is bugged in this game and using that mod is a fix as such which also helps performance.