1. It seems there are a lot of buffered frames in IP CAM. Have to
wait enough time untill all buffers are flushed.
2. From watermellon's suggestion, increase travel speed duing layer
change, to save time and reduce oozing.
JIRA: STUDIO-2167
Change-Id: Ia2ec0bde216e90207897c00c395f7e02ea2fe342
(cherry picked from commit 9c85a7c68617b1628e1698912da20f1ebc69ec16)