By the term "turning", I'll guess you're actually talking about the rotation property. AE has its own arcane lingo, and it makes for clearer communications if you use it.
It LOOKS like you're rotating 3D layers, but no one can be sure. Can you also show us what the timeline looks like when you do this?
And it also appears that you're new to AE. If that's so, you will GREATLY benefit from this:
Many thanks for the reply, Dave . I activated the " continuously rasterize " and it worked well . However , working on another machine (dual 6 core MacPro , graphic card Hadeon ) this problem never happened.
Thanks for the links about "getting started".
Sorry, I mean Yan-K, too.