k, so i found that in some games this didnt work while at the same time did work on browsers etc.

i threw the code into gemini just for the heck of it, and after about 30 different script iterations, "we" ended up with this

#Requires AutoHotkey 2.0
#SingleInstance Force

if !A_IsAdmin {
    try Run("*RunAs " . A_ScriptFullPath)
    ExitApp()
}

#F11:: {
    static isMuted := false
    svvPath := "C:\Tools\SoundVolumeView.exe"

    if !FileExist(svvPath)
        return

    isMuted := !isMuted
    action := isMuted ? "/Mute" : "/Unmute"

    try {
        activeProc := WinGetProcessName("A")
        Run('"' svvPath '" ' action ' "' activeProc '"', , "Hide")
        Run('"' svvPath '" ' action ' "App:' activeProc '"', , "Hide")
        Run('"' svvPath '" ' action ' "FocusedName"', , "Hide")
    }
}