Having Trouble With Genre Combinations/Multiple Genres

So far enjoying the game. However, I researched Multiple Genres and found anytime I tried to make something like an Action/RPG or Action/Adventure or Sim/Strategy the game would tank. Just absolutely bomb.

Do you all have any insight into what I can do slider wise (or otherwise) to help make those kind of games more successful?

Action Games dont need sound so dont invest in it, they need high AI, and 1/2 level design, open world and advanced AI could be useful too

OP is talking about multi genre!

Okay, hmm. I am surprised Sim / Strategy tanks. Their sliders are really similar and should work the same as a pure Sim or Strat?