First off, the dealer tilting the cards towards him during shuffle to manipulate the cards. LOL. In gaming school, you are taught to do that. It actually creates a smoother riffle. Not as hard on the cards. Like I said before, no dealer would be asked to manipulate the cards. It’s way too risky.

At my casino we go through 3 laces we call it. Break 4 decks on each side, left and right hand grab some cards and riffle in the middle. Then when out of cards. You split it up 4 decks again. And repeat 3 times. On the final riffle, you don’t push all the cards into forum(squared), but like halfway in looks like. You then need permission “shuffle check” from supervisor to clear. The lace is not allowed to have more than 1 chip thick of clearance between the cards. Or it wasn’t shuffled correctly. This dealer manipulating the cards is total non sense.
as far as CV, I do set bias on extreme for positive counts. Mainly to practice my deviations. No sense in waiting for hours on end to learn how execute properly. And my results differ from yours. I’m up money.
I’m only actually just losing in the real casino :”( .