I find myself constantly having to turn it on and off cos it's the only way to use 2.0's feature of ghost-requsting materials inside crafting machines. If it's possible it would've been really nice to have the tick box after the "Electrified floor" setting in Miscellaneous tab rather than all the way down in Mod Settings. There're lots of overhauls where ghost-requesting materials is very useful and turning off "Auto-build in sandboxes" is the only way to access it inside BPS.