Try the following:
Reduce your PC screen resolution.
Exit or pause programs that need a high CPU load. These programs can include anti-virus scans, backup programs, Windows updates, and so on.
Switch Wi-Fi MediaConnect to SD resolution, as follows:
Right-click on the [TV] icon in the notification tray and select [Options]
Click on the [Resolution] tab and select the [Options] for SD resolution
If you are not running any other programs when you see this message, your PC probably does not have enough CPU resource.