They fly through objects/walls/ground, they fly too fast, look very low resolution/quality,... No biggie, it's just glitched out at the moment.
When it gets to the point this is actually the main issue... More seriously Jan, you can just use the bug report thread to specify the cases where you´ve encountered such issues? The model isnt changing as it´s not meant to be drawn up close, if and where it is you can report it and we´ll tweak it..