By default, the Video Mode is selected.
Graphic Mode: It’s usually for the static state video. Pictures are the main display contents, and the pixel update processing is not so fast. The CPU consumption is lower than video mode.
Video Mode: It’s usually for the dynamic state video. Videos are the main display contents, and the pixel update processing is fast. The CPU consumption is higher than graphic mode.
There are too many factors that are able to affect the bandwidth and compression ratio that depend on your video format, resolution, etc.
For your reference, when user plays a 4K@30Hz video with IHD-410PT and IHD-410PR, the maximum bandwidth is around 850Mbps; the average bandwidth is around 275Mbps (When the video quality is higher, it will request higher bandwidth.).