DoD3 RPCS3

https://nopaystation.com/view/PS3/NPUB31251/DOD3MAINGAME0000/1?version=1

Download the PKG and RAP from that website, install the PKG with RPCS3, and RPCS3 will tell you to update the game to version 1.01. After doing so, run the game and you should get an error. The error will tell you where to put the RAP file, so go ahead and do that. Another method for this might be to use "Install Packages/Raps", just like the DLC I'll explain later. I don't know if it works because it's not how I did it, but you can try if you want.

You can also download whatever DLC you want from this site. Not all the DLC for this version is listed on its page, so you'll have to do a bit of browsing to find DLC matching the NPUB31251 ID. Keep them at least organized in a folder when you download them, because their filenames are complete nonsense and they could be hard to find depending on where you download them to. It's a pain downloading and installing each DLC individually. You will at least want the six Intoner DLC prologues and maybe JP VA, and remember to make sure its ID is NPUB31251. You won't need the RAP files for DLC. DLC can be installed by clicking on Drakengard 3, going up to file, "Install Packages/Raps", and selecting the .pkg file.

Even with all that done the game will probably crash when you try to turn on JP VA or access any DLC, so download the NPUB31251 All DLC Fix from here.

http://ps3assassins.blogspot.com/2016/11/drakengard-3.html

Just download it, extract it, navigate to the NPUB31251 file, then install the .pkgs from there into Drakengard 3 using the same method as the DLC.

To use the 60fps patch go into RPCS3 and select "Manage" at the top, "Game Patches", check the "Show Only Owned Games" box, it should show you Drakengard 3, go into NPUB31251 ver 1.01, and check Unlock FPS. Apply and Save, then right click Drakengard 3 in your game list and Change Custom Configuration. In the CPU section you're going to want to UNcheck Enable SPU Loop Detection, which will eliminate most audio stutter/crackle. If you still have some, you're going to want to change the amount of Preferred SPU Threads, I have it set to 3, but it might be different for you, or you might not even need to change it. In the GPU section you can turn on Vsync, set the resolution to whatever your computer can handle, and set the Framelimit to 60. Next go to the Advanced section and set Vblank Frequency to 120hz for 60fps. As far as I can remember that should be everything you need to do here so Apply and Save Custom Configuration.

This is the only way I got it to work. Hope it helps.