When watching video from a device connected using the HDMI 4 port, video switching is slower than when using other HDMI inputs.
Depending on the connected device, when using HDMI 4 port it may take more time to display video content and video switching may be slower.
To avoid the issue, connect the device using a different HDMI port on the TV.
For additional details regarding the HDMI 4 port, refer to the TV's Help Guide.