Why can't I play Demon's Souls on Ps4 when it's a ps3 greatest hits? Aren't all the greatest hits playable on ps plus? And why is there a remake for the PS5
Demon's Souls - no sound after boot screen. · Issue #8791 · RPCS3/rpcs3 · GitHub
Fix No Sound on PS3 when HDMI Cable connected Playstation 3 Repair Audio issue - YouTube
Demon's Souls' scary sounds are just a glitch, and Sony says a fix is on the way | GamesRadar+