Do these sentences require the comma and why?

Some Women Are Leaning In So Hard, They're Falling Over

Gears of War: Judgment is so hard, they had to change the controls

Your team may be working so hard, they have lost sight of why they are working for you.

its good

Okay, after some research I've discovered the solution.

In these sentences they all had the word "that" replaced with a comma which is okay.

Yeah, this is all about commas that "set the scene." There's more on commas after adverbial clauses at the start of sentences here.