I find a lot of the stuff which Engine Prime doesn’t map properly is often a third of the total tempo out, so say the actual track tempo is 140 BPM it’s likely to align the grid to 105 BPM. Simply mutiply 105 x 1/3 = 35, then just add the 35 to 105 to find the actual track tempo of 140 BPM.
Now I’m thinking about it, it’s possibly getting tripped up with tracks that use a 3/4 signature. Strange it does that though as it’s a simple calculation to fix. No doubt Denon will sort it in the near future (maybe they could add a 3/4 button for tracks that go awry).