current pc strat does work on console, since both methods have the loading in them i think the time difference isnt huge. but yea with ledgebuffer instead of wallclip it works the same

It does minor differences depending on which patch there is a loadless version, however i never got it to work

not "on ps4" in that sense you can use livesplit on your pc and display it on a second monitor or use frame perfect on your phone

in terms of adding livesplit into a recording you will need to record your console gameplay with elgato for example and then put it all together in OBS on a pc