Symptoms
- Delay between pressing a button and seeing the screen respond
- Menu navigation feels sluggish
- Gaming through a streaming app feels unresponsive
- Delay is worse in certain picture modes
Likely causes
- CommonTV's picture processing mode adding latencyModes like 'Movie' or 'Cinema' apply heavy processing that adds delay; 'Game Mode' is built to minimize this.
- CommonMotion smoothing or noise reduction features enabledThese processing features add noticeable input lag, especially for anything interactive.
- PossibleWeak network connection adding response delayFor cloud-based interactions, a slow connection compounds the delay.
- PossibleOutdated TV or streaming device softwarePerformance bugs are sometimes fixed in firmware updates.
- Less commonHDMI cable or port limiting refresh rateAn older cable or port can cap the refresh rate, making response feel slower.
What to do
- Switch the TV to 'Game Mode' if it has one, which is designed to minimize input lag.
- Turn off motion smoothing, noise reduction, and other picture enhancement features in the TV's picture settings.
- Test on a wired Ethernet connection instead of Wi-Fi if using an interactive/cloud-based app.
- Update both the TV and streaming device software to the latest versions.
- Restart the TV and streaming device.
- Try a different HDMI port, especially one specified as supporting higher refresh rates.
- If lag remains high in Game Mode, the TV's processing hardware may simply not be well suited to interactive apps.
When to call a pro
No professional repair needed; this is a settings and hardware capability issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.