Try this next time:
-Turn the key to start, do not start.
-Turn the key off.
-Turn the key to start again, this time crank the engine. Does it crank right up? Bet it does. Guess you know what that means. I am having same problem only worse. Pending a 255 LPH fuel pump to keep up with my aftermarkets. It did it before upgrades, now just worse.