Went into icing conditions yesterday. Flipped on all the anti-ice. I noticed the de-ice boots were just clipping up through the ice, then clipping back down through the ice. They didn't actually get rid of the ice. Anyone else seeing that behavior?

 

The issue is the don't model ice accumulation correctly.  They just splatter it all over the plane.  In real world there's usually typical places where it builds.  Leading edge of wind, nose cone, antennas, vertical stab leading edge etc.

So it's just a visual effect?  It looked like very low levels of ice so I wasn't surprised that it didn't seem to be impacting performance much, but if I get into heavy icing is it not going to model the impacts to the flight characteristics?

 

It will eventually start to de-grade the aircraft performance.