Smart TV Slow? 7 Fixes for Google TV, Samsung and LG

Is your smart TV slow to open JioHotstar or Netflix, or does the remote lag by a second every time you press it? Usually the TV isn’t dying. It’s full of cached data, running apps you never open and waiting for an update, and most of that takes 15 minutes to fix.

Below are seven fixes with exact menu paths for Google TV, Samsung and LG. Fix 1 takes 30 seconds and needs no menu at all, and one LG setting in fix 5 explains why some LG TVs stay sluggish even after a restart.

Is Your Smart TV Slow Because It’s Full?

A smart TV is a small computer with a big screen. And like a cheap phone, it often has limited memory and storage to begin with. Every app you install, every update and every cached thumbnail on the home screen eats into that space.

Samsung’s own support page on slow TV apps blames three things: memory overload from too many running apps, a build-up of cached data and software conflicts. Google’s help page for Google TV devices focuses on storage, with two main fixes: clear the cache and remove apps you don’t use.

Signs it’s storage or memory, not your Wi-Fi

• The home screen itself lags, even before any video starts.
• Apps take a long time to open but play fine once they do.
• You see messages like “app will restart to free up memory” (common on LG TVs).

If videos keep buffering but menus are quick, the problem is more likely your internet. Run a speed test on your phone, standing near the TV, before you blame the TV.

Fix 1: Cold Boot the TV (30 Seconds)

Switching off with the remote doesn’t fully restart most smart TVs. They go into standby, and the same apps stay in memory.

Samsung’s support page suggests a proper cold boot instead:

1. Turn the TV off.
2. Unplug it from the wall socket (or switch off the plug point).
3. Wait 30 seconds.
4. Plug it back in and switch it on.

This works on almost any brand, including Mi, OnePlus, TCL and Vu TVs running Google TV or Android TV. If the TV is on a stabiliser or spike guard, you can switch that off instead.

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Fix 2 and 3: Clear the Cache and Remove Unused Apps

This is the fix that helps most often. Here are the paths for the three biggest platforms in Indian homes.

Google TV

Google’s help page is clear that clearing the app cache “only removes temporary data”, so you stay signed in. It also says media may load faster afterwards. Then uninstall apps you haven’t opened in months: old regional OTT trials, games the kids tried once, duplicate music apps.

Samsung

On a Samsung TV, Device Care’s Storage section lets you pick individual apps and clear their cached data. Start with the heaviest ones, usually YouTube and the big OTT apps.

LG

Menu names change between webOS versions, so treat these paths as a guide. Tech Junctions’ LG guide notes there’s no single “clear all cache” button on webOS, so you clear apps one by one.

Fix 4: Update the TV Software

Updates often fix the exact lag you’re seeing, especially on newer TVs that got a big interface change.

• Samsung: Settings > Support > Software Update > Update Now.
• LG: Settings > Support > Software Update > Check for Updates.
• Google TV: search Settings for “System update”. It usually sits under System or About, and the label varies by brand.

After an update, do a cold boot again so the TV starts with a clean memory.

When updates make it worse

Sometimes an update adds more to the home screen, like new rows of suggestions or a preloaded app. You usually can’t remove those rows, but clearing cache and uninstalling extras still helps the TV feel faster.

Fix 5: LG’s Quick Start+ and Memory Optimizer

This is the LG-specific catch from the top. Quick Start+ makes the TV turn on faster by keeping it in a deep standby, with background processes still running. Convenient, but it means memory never fully clears.

Turn it off, and the TV boots a few seconds slower but starts fresh each time. According to the Tech Junctions guide, the path depends on your webOS version:

Then look for Memory Optimizer under Settings > All Settings > Support. On some OLED models it sits under OLED Care > Device Self Care instead. If your TV doesn’t have it, a cold boot does a similar job.

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Fix 6 and 7: Reset Smart Hub, Then Factory Reset

Only go here if fixes 1 to 5 didn’t help.

Fix 6: Reset Smart Hub (Samsung)

Samsung’s path is Settings > Support > Device Care > Self Diagnosis > Reset Smart Hub. The default PIN is usually 0000. Samsung warns this restores Smart Hub settings to factory defaults and deletes saved information, so you’ll need to sign in to your apps again.

Fix 7: Factory reset (all brands)

This wipes everything: apps, logins, Wi-Fi and picture settings. Do it only as a last resort.

1. Keep your Wi-Fi password and app logins handy (Netflix, Prime Video, JioHotstar, YouTube).
2. On LG, the Tech Junctions guide lists Settings > All Settings > General > System > Reset to Initial Settings. On Samsung and Google TV, search the Settings menu for “Reset”.
3. After the reset, install only the apps you really use.

Is It Time for a Streaming Stick Instead?

If your TV is five or six years old and still slow after all seven fixes, the hardware may simply be too weak for today’s apps. You don’t always need a new TV. A streaming device plugged into the HDMI port can take over the “smart” part, while your TV just shows the picture.

Google’s help page also mentions one more option for its own Google TV Streamer and Chromecast with Google TV: you can add storage with a USB-C hub, a USB-C charger rated above 1.5 A/7.5 W and a USB stick or SD card. That’s handy if storage is the only problem.

Frequently Asked Questions

Why is my smart TV slow even with fast internet?

If menus and the remote lag, the cause is usually low storage, too many apps or a build-up of cached data, not your internet. Clear the cache, uninstall unused apps and cold boot the TV.

Does clearing cache on a smart TV delete my apps or logins?

No. Google says clearing the app cache only removes temporary data, so you stay signed in. A factory reset or a Samsung Smart Hub reset is different and does remove saved information.

How do I speed up a Samsung smart TV?

Cold boot it by unplugging for 30 seconds, clear app cache from Settings > Support > Device Care > Storage, and update the software. If it’s still slow, reset Smart Hub from Device Care > Self Diagnosis.

Should I turn off Quick Start+ on my LG TV?

If your LG TV is slow, yes. Quick Start+ keeps the TV in a deep standby so memory doesn’t fully clear. Turning it off makes start-up a little slower but often makes the TV smoother.

How often should I restart my smart TV?

There’s no fixed rule, but a cold boot every week or two keeps memory fresh, especially if you never fully unplug the TV.

The Bottom Line

A smart TV slow enough to annoy you is usually a full TV, not a broken one. Unplug it for 30 seconds, clear the cache, remove apps you never open and update the software. Shopping for gadgets this Diwali instead? See our list of useful gadgets under ₹2,000, and check any “big discount” with our fake discount guide first.

Sources

• Google Help: free up storage on Chromecast with Google TV or Google TV Streamer
• Samsung Support: how to troubleshoot a slow Samsung TV app
• Tech Junctions: why is my LG TV so slow (menu paths by webOS version)