OP:
It would be nice if it were the model(s). The included 3D aerobats in EP1 slide at times, at times they don't. They mostly slide. I haven't logged which does, which doesn't, or when each does or doesn't. Many stock G3 aircraft (with no modifications) exhibit this behavior, so I don't believe it is an externally posted aircraft problem.
The intermittent nature of this is very frustrating. It obviously is a widespread anomaly. Many are experiencing it, even without EP1, on verison .430 or .426.
I've got .410 setup on another HDD in my gaming system to use, when .430 ice-skating irritates me enough. I mostly fly and don't taxi alot with .430 now.
I hope they may figure something out. It's as if the planes are so light and feathery now, they don't have much, if any ground friction. I don't know if the overzealous "P" factor (overstated torque) exacerbates the anomaly or not.
All I know is .410 does not experience this problem, on my machine.
Charles