Rounded corners cut deeper than straight lines

[Goatshaver]

I don't quite understand this issue. This happens on almost every rounded corner job. 90 deg cuts don't act this way and I'm trying to figure out why rounded corners cut deeper then the rest of the cuts. Often it's ruin the sheet simply because one or two corners are cut deeper and you catch the liner when peeling the label. This seems like the dumbest question but this haunts me all the time and I just don't understand why.

 

[Boudica]

It happens to me sometimes with our Summa. Like a giant circle, and half of it cuts through the liner. Or it will cut through in (some cuts) about the middle, but on the sides it's fine. I mentioned this second scenario to a tech once, and he suggested that sometimes the force is different in the middle than on the edges, and I do test cuts all the way across to find a median. That takes a long time... so now I just test it in the middle. Sorry, that probably isn't helpful to your issue.
Maybe it has something to do with the blade... is it a tangential?

 

[Smoke_Jaguar]

Acceleration runs through curves, 90 degree cuts are basically 2 cuts with a short stop between.