Sorry, I regret typing 'boss cheese' now. But I'll get to that later, the main thing is that Bloodborne's load time improving patch is finally on the way and promises to cut 5-15 seconds off your wait.
Main points of UPDATE 1.03
-Reduced loading times (approx 5-15 seconds;. May vary by circumstance)
-fixed bug that left certain lifts and elevators inoperable
-fixed bug that resulted in bosses becoming immobilised
-fixed bug that left players unable to advance NPC events during multi-play
-When the PS4 is put into Rest Mode during online play, the game will now return to the main title screen upon resuming play this will resolve matchmaking issues related to Suspend / Resume.
-Other various bug fixes
That bit about bosses becoming immobilised refers to the weird memory leak issue that saw boss' attack ranges and variety reduced if you left the game running too long. If wanted an easier fight you could simply leave your machine on over night to cheese tricky opponents (see, now that headline makes sense). I talked to some developers about what Bloodborne does while it's loading if you're interested in find out the technical side of things.