I feel like inconsistency is an integral part of the speed force. My wife and I both picked at the Museum thing too. No way he could get it that fast at Mach2 or whatever.
And Barry barely being able to catch Vandal Savage's knives was silly, he should've been able to catch them inches from his hands and put them back in Vandal's gay little knife vest holsters. And basically every face-to-face encounter with a villian could be resolved by Flash running away then super-punching them in the nuts at mach2. Especially Damien Dark (lol @ Neal McDonough's reaction to it, like, 'wtf is that, I'm sure glad I picked this show to be the bad guy in and not the other guy's show')
But that'd make for dumb TV, so enjoy the inconsistencies.