MyLeague unplayable

Is MyLeague broken? Should I wait for 2k20? I spent so many hours to tweak my sliders but every game is different and not realistic anymore. When I think I have found good sliders the game gets awful. I know players don't play at the same level in each game but the game feels completely different.

Game 1: 50% FG
Game 2: 65% FG...why?
Game 3: 48%
Game 4: 40% FG...

and I always played with the same skill. tweaking sliders is impossible...as each game has other results. I don't want to play 10 full-length games for sliders.

I even tweaked tendencies to great results but then after 1-2 games the CPU does something completely different.

PS Porzingis is OP in this game. Can't get him to realistic FG% unless all other players don't make anything.