The reason I think shutter speed matters is that I would prefer to isolate motion blur from focus errors. It simply cannot be clear to me exactly how out of focus your moving subjects are. Just basic test procedures. Separate and isolate variables and work with one at a time.
If I thought your images didn't display some sense of a *potential* problem I would not have suggested testing real verses reticle focus sensor position. Everything else I said about image quality was to encourage you to isolate those variables like low or poor light, shutter speed, and etc.
I'm not sure why this argument is continuing. I think you need to do that test and then come back with the results. Forget the last set of images. Go forward