I've recently "given up" on Bloodborne because for some reason, the game refuses to run after launching it once. I thought I had to delete the shader cache in order for it to work properly, and it did! It was able to launch again, but after I quit and try to launch it again, it straight just won't launch! So I have to go back and delete the shader cache over and over in order after each playthrough in order for Bloodborne to even run. The strangest part? It only started to happen AFTER I updated Shadps4! Bloodborne worked completely fine before the update, but for some reason the new update fucked up the shader cache in some way so bad that Bloodborne can't function until you delete the shader cache after each launch. This problem also lies within Diego's build and the BB Launcher.
I've came to a conclusion that I probably won't play Bloodborne for a while on my Steam Deck, and just given up on it, but if there is a solution, please tell me as soon as possible.