Time used to analyze chess games with an engine

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PaulTheMentat

I know many players think using a chess engine for personal game analysis is detrimental to your chess skills, but for those who think contrarily and use them, how long do you let a chess engine calculate on a per move basis and how many PVs do you use?

I currently use komodo 9.3 on Lucas Chess GUI, 30s per move, & 5 PVs, is this adequate or should I use more time?