Casting Response Slow on Nvidia Shield

I have an automation to stream my Unifi G4 Doorbell to my Nest Hub and Nvidia Shield.

When I run the automation, the Nest Hub immediately starts displaying the stream. However the Nvidia Shield takes about 5-6 seconds to start the stream.

My Nvidia Shield is hardwired into a Gigabit switch and my Nest Hub is on a 5Ghz wifi.

Anything I should be checking to improve response performance