We'll just have to disagree with the definition of coming out flat then.
Ivey is what he is. Didn't play bad, took a bad angle and flailed. The WRs, they also are what they are. They don't have the skills to fight for contested balls and are better catching in stride. Completing passes 3-4 yards short? They weren't just falling down upon completion. Clemson was protecting the first down marker and have several guys positioned to gang tackle. The defenses failure to diagnose plays? They're coached to penetrate and go for tackles for loss without regard for gap integrity allowing the OL to get to the LBs that are out of position from pre-snap alignment. You have to be Ray f*ckin Lewis to make many of those plays.
Nothing you cited was coming out flat or a lack of effort. It's a failure to recognize your weaknesses and prepare a plan to compensate for it (as best you can).
Now that may add up to a flat performance but that's not what most think of when you say "they came out flat". You can say that's just semantics. But it's a world of difference if you're going to talk about corrective action rather than call them a bunch of jags that don't care.