Xiaomi Redmi 8 has entered the market as a device of the budget segment, offering impressive autonomy and a capacious battery, but its computing power has always been a compromise. It has been several years since its release, and modern, heavier versions of applications and shells MIUI are beginning to noticeably affect the smoothness of the interface. Users often face slowing down menus, long start programs and sudden closure of background tasks, which significantly reduces the comfort of using the gadget.
However, it is not worth rushing to replace the device or flashing it on custom assemblies, since in 90% of cases the situation can be radically corrected by competent software optimization. System resources of the Snapdragon 439 processor and 3-4 GB of RAM are enough for basic tasks if you correctly set priorities and disable unnecessary visual effects. In this guide, we will analyze proven methods that will help return your smartphone to its former sharpness of response.
Analysis of the current state of the system and memory
Before you start radical acceleration measures, you need to understand what exactly is “eating” the resources of your Redmi 8. Often the cause of low performance are not so much hardware constraints, but accumulated software debris and dozens of running background processes that the user does not even notice. Android system over time overgrows cache, which is not always correctly removed by standard means, occupying precious space in the memory partition and slowing down the reading of data.
To start, you should look at the storage settings and check how much free space is left on the system disk. If more than 85% of the volume is filled, the operating system starts to work slower due to fragmentation and lack of space for temporary files. Clearing the cache and removing unnecessary media files is the first step that gives a noticeable increase in the speed of the file system.
⚠️ Warning: Do not use third-party accelerator apps from the Play Market that promise instant gains FPS. In reality, they only add to the processor’s constant monitoring and often contain aggressive advertising, which can be fatal for a weak Snapdragon 439 processor.
It is also important to assess the current memory load. Integrated MIUI monitoring allows you to see which applications consume the most resources right now. Often it turns out that heavy social networks or games remain hanging in the background, blocking the launch of new programs. Regular "cleaning" through the notification curtain or using the built-in "Security" tool helps free up RAM for current tasks.
Optimizing the visual effects of MIUI
MIUI is famous for its beauty and abundance of animations, but they create the illusion of slow work on budget devices. Switching between windows, opening folders and folding applications require time for rendering, which the processor does not always have enough to allocate without delay. Disabling or reducing the duration of animations is the easiest way to make the interface visually faster without losing functionality.
To access the advanced settings, activate the developer mode. Go to Settings → About Phone and quickly click on the MIUI version seven times. Once the "You've become a developer" notification appears, a new menu will open under "Additional" section. Here we are interested in "Window animation", "Switch animation" and "Duration of animation".
It is recommended to change the values of all three parameters from the standard “1x” to “0.5x” or completely disable them (“Without animation”). This will make the system response instantaneous: windows will open immediately, without smooth exit. Although this will slightly reduce visual smoothness, the subjective sense of speed of Xiaomi Redmi 8 will increase many times.
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If the interface is twitched after disabling animations, return the value to 0.5x – this is the optimal balance between speed and smoothness for an HD+ screen.
Another hidden resource-intensive element is the live wallpaper and widgets on the home screen, which constantly consume CPU cycles to update information and render graphics. Replacing the dynamic background with a static image and removing unnecessary weather or news widgets will significantly reduce the load on the GPU and CPU in standby mode.
Managing Autoboot and Background Processes
One of the main reasons for the fast discharge and lag in Redmi 8 is the uncontrolled launch of applications. Many programs prescribe themselves to autoboot and continue to work in the background even if you do not use them, which not only eats up RAM, but also constantly wakes the processor up, preventing it from going into deep sleep, which is critical for energy efficiency.
MIUI has a powerful built-in tool to monitor autoloads: Go to the Security app (green lightning icon), select Permissions, and find AutoStart. You need to manually disable all apps that shouldn't start with your phone. Leave only messengers (to receive notifications) and system services on.
☑️ Checklist of autoload optimization
Alternatively, you can set a background activity limit for specific applications. From the Security menu → Battery, you can select an energy saving strategy for each program. For rarely used applications, set a “No Limits” limit only if you need notifications, otherwise select “Limit background activity.”
Also, look for the Memory Extension feature, if available in your version of MIUI. It uses some of the internal memory as virtual RAM. For Redmi 8 with its not-fastest eMMC 5.1 memory, enabling this feature can, on the contrary, slow down the system, since the internal memory read speed is lower than that of the real RAM. It is better to keep this option off.
Cleaning the storage and working with the cache
A nearly full internal drive is a guaranteed brake for any Android smartphone. When space runs out, the system has nowhere to create temporary files and swaps, which leads to freezes and long responses. For comfortable work, the Xiaomi Redmi 8 must be kept free at least 15-20% of the total memory.
Use the built-in Cleanup app in the security menu to remove system debris. However, for a deeper cleaning, it is worth manually analyzing the WhatsApp folders (Telegram), where gigabytes of videos and images are often accumulated.
| Type of data | Where it takes place | Cleaning recommendation | Impact on speed |
|---|---|---|---|
| Cash app. | Settings → Applications | Clear the cache (not data!) | High (accelerates launch) |
| Download folder | File manager | Remove old APKs and documents | Medium (frees up space) |
| WhatsApp garbage | Android → Media | Delete unnecessary videos | High (unloads indexation) |
| Temporary files | folder MIUI → Debug_log | Delete the contents of the folder | Low (frees up space) |
The file deserves special attention. MIUI/debug_log, Sometimes the folder is a few gigabytes in size, and the user doesn't need it at all, and checking and cleaning the directory regularly through the file manager is a good habit for owners of budget devices.
How to securely remove the cache of a particular application?
Secret settings for advanced users
For those who are willing to go beyond standard settings, MIUI offers hidden optimization options through engineering menus and special commands, which allow you to force the background processes to be more aggressive and change the priorities of the system, but you should use them with caution, knowing what you are doing.
One useful feature is to enable Advanced Mode in the battery settings if it's available in your firmware version, and you can find "Do Not Activity" on the developer menu, and if you activate it, the system will immediately destroy the application as soon as you fold it, which will give you maximum performance in the current task, but kills multitasking.
Another powerful tool is network and Bluetooth resets. Sometimes accumulated errors in communication modules can cause micro-freezes of the system when the phone tries to maintain a connection. Resetting these settings through Settings → Connection and Sharing → Resetting Wi-Fi, mobile network and Bluetooth can unexpectedly improve overall responsiveness.
⚠️ Warning: Enabling the “Do Not Activity” option in the developer menu will cause them to boot again when switching between applications, which will increase the load on the processor at startup, but will free up all RAM. Use only in critical shortage situations. RAM.
It’s also worth checking if Game Turbo is on for regular apps, adding frequently used programs to the gaming list can give them priority in allocating CPU resources, although it will increase battery consumption.
Cardinal measures: Resetting and updating
If software optimization fails, there are two options: a full reset to factory settings or waiting for a system update. Hard Reset removes all data, settings, and most importantly, all accumulated software debris and file conflicts, often returning the smartphone to a “out of the box” state.
Before resetting, make sure to back up your important data via Mi Cloud or locally to your computer. The reset process is done through the Settings menu → About Phone → Resetting → Erase all data. After that, the phone will be clean and you can install only the really necessary applications, avoiding the installation of “ballast”.
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Full reset to factory settings is the most effective way to combat software lags caused by prolonged operation and frequent change of applications.
As for updates, Redmi 8 may already have limited support for new versions of Android. However, installing the latest available security patches and MIUI updates is important, as they often contain optimizations for specific models. Check for updates in the Settings menu → About Phone → MIUI version.
In extreme cases, if the official firmware is not working well, enthusiasts consider installing custom ROMs (like LineageOS) that lack the heavy shell of MIUI. But for the average user, this is a risky path that can lead to a loss of warranty (if it is still relevant) or the inoperability of banking applications.