Govee has the most TV backlighting products, but the manufacturer isn't the only option. Like the AI Sync Box 2, the Philips Hue Play HDMI Sync Box has also been updated for HDMI 2.1 compatibility.
Ensure that both your TV and Roku device have the latest firmware and software updates. Outdated software can lead to compatibility issues and HDMI connection problems. Check for updates in the TV's ...
For Roku TVs, disabling certain advanced display settings can help. Go to Settings > System > Advanced system settings > Advanced display settings and turn off Auto-adjust display frame rate or ...