Hello.

So when playing a song on PPD I instantly open the menu to check the latency is correct but after playing the song for bit I open the menu again and the lantency increased or decreased by itself and I don't know the cause. This is quite annoying as when I exit PPD it saves latency so if it is increased or decreased then when I play the song again I will have to adjust again.

Any help would be appreciated.

Run PPDConfig and disable Auto adjust latency in Disabling Settings.