If you use a 5 GHz Wi‑Fi network, try switching your router to 2. Concurrently, your iPhone needs to be running iOS 12.
Fix Roku TV iPhone Casting Lag: Optimize Your Screen Mirroring
This process leverages your home Wi‑Fi network to transmit video and audio from your Apple device to the television, allowing you to share photos, watch movies, or enjoy mobile games on a much larger display. This usually stems from network congestion, outdated software, or specific router configurations that block AirPlay traffic.
Navigate to Settings > System > Screen Mirroring. 4 or a later version to utilize the native screen mirroring feature.
Fix Roku TV iPhone Casting Lag for Smooth Screen Mirroring
Update the firmware on both your iOS device and your Roku TV to the latest software versions. Your Roku TV must be a 2018 model or later, such as the Roku Smart TV TCL 6-Series or newer, to support screen mirroring functionality.
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