PCSX4 is an open-source beta PS4 Emulator & debugger project written in C++ allowing you to Play PS4 games natively using H/W-assisted virtualization on PC & Mac.

How to run Bloodborne on PC with PCSX4 - PS4 Emulator.
PC Specs: https://pcsx4.com/bloodborne-pc-pcsx4-ps4-emulator/
PCSX4 can now run on both PC and MAC. Check FAQ,s for more info.

Bloodborne PC Progress: We are happy to announce that Bloodborne is now fully supported by PCSX4 although there are few glitches in areas where menu items are displayed but there isn’t any major problem in actual gameplay. When you’re playing Bloodborne on PCSX4 with a powerful computer, things should run fairly well. The game is running at full speed, there are no major graphical glitches, you can use your favourite controller if you want. Yet, every time you go to a new level, or load a new menu, there’s a very slight but noticeable “stutter.” You can turn off the framelimiter to check if your computer can run the game at well over full speed.