if you have an old PC with a CPU that doesn't support AVX2 instruction you won't be able to run ShadPS4 unless you use intel SDE which significantly affects performance, this is only useful for testing small games, cannot play bloodborne like this.
Here are the system requirements of shadps4:
CPU:
A processor with at least 4 cores and 6 threads
Above 2.5 GHz frequency
AVX2 support (strongly recommended for good performance)
GPU:
A graphics card with at least 1GB of VRAM
Keep your graphics drivers up to date
Vulkan 1.3 support (required)
RAM:
8GB of RAM or more
OS: Windows 10 or Ubuntu 22.04
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► ShadPS4 https://github.com/shadps4-emu/shadPS4/actions
► Intel sde https://www.intel.com/content/www/us/en/download/684897/intel-software-development-emulator.html