For five days or more, PS3 fans haven’t been able to cloud stream games on the PS5. When trying to launch a title, PS Plus Premium members find that nothing happens. While workarounds exist, the popular RPCS3 PS3 emulator remains functional with a growing compatibility list.
I tried couple of off brands one but they were pretty bad quality. I have gotten one of those usb sticks that allow you to connect any controller now. So, dual sense or DS4 can work with it properly now. Also supports Switch controllers, and probably 3rd party controllers that emulate these controllers.
(I am using https://mayflash.com/product/magic_s_ultimate.html , but there are others too.)