Here is a video from Dr Know-it-all that analyses the flight in detail, plotting the acceleration of the ship throughout the flight from the information shown in the SpaceX telemetry panel and comparing it to that from a Falcon 9 launch. It seems to show that the acceleration was low almost from the start, then dropped off further, and never recovered from what might have been the max-Q “thrust bucket” as is usual for a launch.
This video contains a great deal of speculation, some of which strikes me as off-the-wall (for example, I’ve never heard whether SpaceX differentially throttles the fixed outer engines for steering, nor whether they throttle engines to avoid thrust imbalance after engines shut down), but the acceleration analysis looks correct and, if so, is interesting in understanding what happened.
