A smart TV that takes forever to open an app can turn a relaxing evening into a test of patience. Sluggish menus, buffering videos and delayed remote responses each need a different fix. Pin down which part is slow first, then follow the steps that match your TV's operating system.
Find out what is actually slow
Notice exactly when the delay happens. Slow Home menus and app launches are a different problem from a video that keeps stopping to load, and startup delays and gaming input lag are separate again.
Open another streaming app on the TV. If only one app struggles, focus on that app instead of resetting the whole television.
Test streaming on another device connected to the same network. When several devices struggle, look at the connection first. Smooth playback on other devices still doesn't rule out a problem with the TV's own Wi-Fi connection.
Match the instructions below to your installed platform, not the brand on the bezel. Manufacturers such as Hisense, TCL and Philips sell TVs with different operating systems, so the brand name alone won't tell you the right menu path.
Give the TV a proper restart
A restart is the first fix to try for sluggish menus or an unresponsive app.
On Google TV, select Settings > System > Restart > Restart.
On a Samsung, with the TV on, hold the remote's Power button until the television switches off and back on. Then release the button.
On an applicable Sony BRAVIA, hold POWER until Power off appears, or select Restart when it's offered.
On Roku, open Settings > System > Power > System restart. If your menu has no Power entry, select System restart directly under System.
On a Fire TV smart TV, choose Settings > Device & Software > Restart.
If you can't reach the menus, pull the power instead. Unplug a Samsung TV for 30 seconds, a Fire TV smart TV for at least 30 seconds, or a Roku device for 10 seconds, then reconnect it.
On a Sony BRAVIA, turn the TV off and unplug it for two minutes before reconnecting power.
On a VIDAA U9 TV, turn it off, unplug it for 60 seconds, then reconnect it and turn it on.
On a Google TV Streamer or Chromecast, disconnect the power cable for one minute before reconnecting it. Pulling the HDMI cable alone does not restart the device.
If videos keep buffering, fix the connection
Buffering usually comes down to a busy shared connection or a weak Wi-Fi link.
Pause large downloads and simultaneous streams on other devices, then retry playback on the TV.
Unplug the modem and router for 30 seconds. Plug them back in, wait for their connection indicators to stabilize, and try streaming again.
Move the router closer to the TV, into an open, elevated spot. Cut down obstructions and interference from nearby wireless equipment.
Switch to Ethernet if your TV or streamer supports it. On Wi-Fi, compare your available 2.4 GHz and 5 GHz networks, since neither band is universally faster at every distance.
Run a connection test on the TV itself. Roku uses Home > Settings > Network > Check connection, while Netflix's TV app offers Get Help > Check your Network. Depending on the layout, Netflix puts Get Help under your profile or at the bottom of its left menu.
Open fast.com in a compatible TV browser to measure your speed. Select Show more info to see upload speed plus loaded and unloaded latency. A test on your phone or computer does not measure the TV's own Wi-Fi link.
If the connection still can't keep up, lower playback quality. In YouTube's TV player, open Settings > Quality and pick a lower resolution. That eases streaming demands, but it won't speed up the TV's menus.
On a hotel, school or workplace network, ask the administrator whether streaming is blocked or bandwidth-limited. Google streaming devices don't support networks that require a captive-portal login, so they need a compatible network.
Bring the software up to date
On Google TV, open Settings > System > About > System update to check for operating-system updates.
To update Google TV apps, search for Google Play Store and open it.
Select your profile image or initial, then choose Manage apps & games > Updates > Update all.
On Samsung, select Settings > All Settings > Support > Software Update > Update Now. If the update control is unavailable, exit the running streaming app first.
On LG TVs from 2020 onward running webOS 5.0 or later, use Settings > All Settings > Support > Software Update > Check for Updates.
On Roku, select Home > Settings > System > Software update > Check Now. This checks both device software and apps.
On Fire TV, open Settings > Device & Software > About > Check for System Update. Some devices show My Fire TV in place of Device & Software.
On applicable Sony BRAVIA models, use Settings > System > About > System Update > Check for update. Other models use HELP > Status & Diagnostics > System Software Update > Software Update.
On VIDAA U9, select Settings > Support > System Update > Check Update.
Let updates finish completely before you judge whether the TV feels faster.
Repair an app that keeps hanging
Turn to app-level cleanup when a single app misbehaves or storage is running tight. Routine cache clearing isn't a maintenance chore every TV needs.
On Google TV, select Settings > Apps, choose the affected app under Recently opened apps, and select Force stop > OK.
To clear that app's cache, go to Settings > Apps, select the app, and choose Clear cache > Ok. Use See all apps if it isn't listed right away.
On Fire TV, open Settings > Applications > Manage Installed Applications, select the affected app, and choose Clear Cache.
On Samsung models with the cache controls, open Settings > Support > Device Care > Manage Storage, select the app, and choose Clear Cache. Some models add a View Details step before that control.
If clearing the cache doesn't help, reset the app's local data. On Google TV, go to Settings > Apps > See all apps, pick the app and select Clear data. On Fire TV, Clear Data sits on the selected app's page in Manage Installed Applications. Have your sign-in details ready.
If a removable app still fails, reinstall it. On Samsung, open Apps > App Settings, select the app, and use Reinstall when deletion is unavailable.
Take extra care on VIDAA U9. Its Settings > System > Application Settings > Clear Cache option includes user data, so it isn't the same as Google TV's cache-only cleanup.
Free storage and use built-in cleanup
Removing apps you don't use frees up storage. On Chromecast with Google TV and Google TV Streamer, open Settings > Apps > See all apps, select an unused app, and choose Uninstall > OK. On Fire TV, go to Settings > Applications > Manage Installed Applications, pick the app and select Uninstall.
On Samsung, open Home > Apps > App Settings, select an app, and choose Delete > Delete, though recommended apps can be undeletable. On Roku, highlight an app on Home, press Star (*), select Remove app and confirm. An active Roku-billed subscription can block removal until the billing period ends.
LG webOS 26 models with Memory Care offer Settings > All Settings > Support > Memory Care > Memory Optimizer, and Storage Manager in the same Memory Care menu lets you delete unused apps and files. Applicable webOS 25 models put Memory Optimizer directly under Support.
Samsung TVs with Device Care offer Home > Menu > Settings > Support > Device Care > Start Device Care. On supported Fire TV devices, turn on Settings > Applications > Auto Offload so that, when storage runs low, eligible apps unused for 60 days are offloaded while keeping their data.
Check whether the remote is causing the delay
A faulty or unresponsive physical remote can make a TV feel slow even when its menus respond normally.
On an applicable Fire TV remote, swap in fresh compatible AAA alkaline batteries.
On a battery-powered Sony remote, remove the batteries.
Hold the remote's POWER button for three seconds.
Wait about one minute, then put the batteries back. This procedure doesn't apply to USB-C rechargeable remotes.
Try the Sony TV's physical controls and compare how quickly it responds.
A phone remote gives you another comparison. With an Android phone and a compatible Google TV or Android TV device on the same Wi-Fi network, open Google TV and select Connect TV.
Select your device.
Enter the code shown on the TV and select Pair.
If the TV responds normally through these alternative controls, the delay lies in the physical remote's signal path. Check the remote itself and make sure nothing is blocking or interfering with the TV's remote sensor. A phone remote is just another way to navigate, and it doesn't increase the TV's processing speed.
When turning the TV on takes too long
Startup settings help when the wait happens as the television powers on. They do a different job from buffering fixes or app cleanup.
On Google TV models with the feature, turn on Settings > System > Power & Energy > Quick Start for slow startup.
On applicable VIDAA U9 models, turn on Settings > System > Advanced Settings > Fast Power On.
On LG webOS 26, choose Settings > All Settings > System > Additional Settings > Home Settings > Power On Screen > Recent Input to skip Home navigation at startup.
LG's Quick Start+ calls for the opposite move when memory-shortage errors stop apps from running. On the documented webOS 24/25 interface, set All Settings > General > System > Additional Settings > Quick Start+ > Off.
Turn off that LG TV.
Unplug it for 10 minutes, then reconnect power. This may resolve the memory-related failure, but it isn't a reason to disable fast startup on every platform.
Reset the TV or move to an external streamer
Keep resets for problems that survive restarting, updating and repairing apps. They can erase settings, accounts and downloaded content, so have your sign-in details ready. On Google TV Streamer or Chromecast with Google TV, select your profile and open All settings > System > About > Factory Reset.
On Roku, open Settings > System > Advanced system settings > Factory reset, and on a TV select Factory reset everything and follow the prompts. On a Fire TV smart TV, safely eject any connected USB storage first, then use Settings > Device & Software > Reset to Factory Defaults.
If Samsung's Smart Hub apps keep misbehaving, use Settings > Support > Device Care > Self Diagnosis > Reset Smart Hub, enter your PIN (0000 if you never changed it) and select OK. This removes Smart Hub accounts, app information and service settings. On LG models from 2021 onward running webOS 6.0 or later, open All Settings > General > System > Reset to Initial Settings and choose Reset All.
An aging smart-TV platform can also be bypassed entirely. Connect a supported streamer to the TV's HDMI input, power it with its supplied power cord or adapter and switch the TV to that input. Install and use your streaming apps there, which moves app processing off the TV's built-in platform.
Frequently Asked Questions
Will clearing the cache sign me out of my TV apps?
That depends on the platform and the control you use. Google says its streaming-device cached-data cleanup keeps app sign-ins. Clearing Google TV or Fire TV app data can mean signing in again, and VIDAA U9's Clear Cache option includes user data.
Does Game Mode make smart TV apps faster?
No. Game Mode on compatible Samsung TVs and Game Optimizer on compatible LG TVs reduce gaming input latency. They don't fix slow app menus.
Will Apps only mode speed up Google TV?
Apps only mode simplifies the Home screen and cuts back search and Assistant features. Google doesn't promise it will improve performance.
Can a USB drive give my TV more RAM?
No. On certain TVs, supported external storage can give apps more space, but USB storage does not add RAM. Support depends on the model and operating system.