Issius with the 5.0 mac

[Xenoeidos]

l have many issues but the biggest one is that l have a good mac but it runs bad, in Silent Hill SM l had to alterate the CPU clock to make it "playable" now for the law of murphy l cannot play it just crash and when l play mario galaxy 2 it looks good but the sound its bad l think l can solve it if I use another backend like the Direct3d 12 but l cannot find a way to install it.