It doesn't matter if you play 1 table or 20 table at the same time, all that matters is the hands you play. We are talking about variance. Variance doesn't know if you play your next 1000 hands today, or if it takes 2 weeks for you to play. Reducing tables doesn't affect variance, if it doesn't affect your playing quality.

If you think that 20bin is enough for PLO, it just tells me that you haven't had a 10+bin downswing. Which happens in plo quite often, no matter how you play. And as I have said in other thread, there is a big difference between mathematical bankroll requirements and mental requirements. Even if your playing style says that 20bin is enough mathematically, you can't say that losing like 15bin in downswings doesn't take you off from your A game.

You might use 20bin BRM, if you are capable of handling the swings mentally, and willing to drop to smaller stakes when needed. And you accept the fact that no matter how well you play, you still might go broke and need to deposit more.

I think that 99% of the beginning PLO players don't have a clue how cruel the variance can be in this game.