fpPS4 VS GPCS4

PlayStation 4: fpPS4 is the best PS4 Emulator according to the emulation wiki (PS4 Emulation is very early in development so it's not recommended you use PS4 emulation): Download fpPS4

Yes, in fact the PS4 is beginning to see HLE with various emulators, most notably fpPS4 (free pascal PS4).

https://github.com/red-prig/fpPS4

There's a couple actually. Spine was the most impressive at the time of its last release, but it's been about a year since that release and whether it's still being developed is still unknown. fpPS4 and Obliteration seems to be the most promising right now.

PS4 emulation is in the works, but playing something like Ghosts of Tsushima is years away. fpPS4 and Obliteration are experimental emulators / compatibility layers, but they’ve only been in development for a few years and can just boot simple games. That being said, Ghost of Tsushima was one of many games listed in the GeForce NOW leak from Ighor July a few years ago; Since then, many of the games listed have indeed been announced for PC, so a PC port might be on its way.

There's a PS4 emulator being developed in Pascal. For real.

Open source: gpcs4, fpps4, kyty

The main dev of Orbital (Alex) has said that he is currently taking a break, if you're interested in another windows PS4 emulator GPCS4 can currently render some graphics and boot into one game, but it isn't really playable (~15fps), the best ps4 emulator by far at this point is spine.

Because you don't just have to figure out the software (software that is already not just a stepping through the debugger away from comprehension), but the hardware too. Even in the ps4 case, there's a world to reinvent (here the lines between emulation and virtualization may effectively blur though, since only "secondary devices" wouldn't be run directly)

There are, just none of them are worth using. GPCS4 can run one game, "We Are Doomed" at a very low FPS.

there is a legit ps4 emulator for windows but i dont think you are looking for it because it doesnt run at playable frame rate Inori/GPCS4: A Playstation 4 emulator just begin (github.com)