Apologies for the delay in replying, but my reactions aren't what they used to be...
After 40 years of aviation (not all of it airline flying) and 10 years of that instructing, I can't think of many accidents or sim/ line flying issues where split second decision-making (or lack of it) has been the problem.
In the vast majority of accidents and incidents, including those involving engine failure of a twin or multi, it is far more important to draw on experience or rule based, or skill based training to arrive at the correct decision, following from the correct diagnosis. Playing the video game with the "Do something, anything, NOW!" mindset causes more problems than it solves, and reacting sooner just gives the bad decision more time to have it's effect, particularly since the ensuing confirmation bias is not at all age related.
Just saying.