In the timeline edit window, the moving around button only supports two scales : 1sec, 0.1 sec. Sometimes in case creating fast moving scenes, it requires under 0.1 second time scale editing. My self solution currently using is that make the animation speed 5 times and then 0.1 sec interval corresponds to 0.02 sec. Is there any better or official way to navigate under 0.1 second granularity? =)