Xiaomi Redmi 9 has proven to be a reliable budget device, but over time, even powerful processors begin to experience difficulties with modern heavy applications. Users often notice a drop in the number of frames per second in games, long menu loads and periodic slowdowns of the MIUI interface. This is a natural process associated with cache accumulation, memory fragmentation and operating system updates that require more resources.
Fortunately, the Android architecture allows you to flexibly manage system resources, disabling visuals and background processes that are not critical. Proper software configuration can return the device to its former sharpness of response and significantly extend the life of the gadget without the need to replace iron.
In this article, we will look at proven methods to get the most out of your device, not using questionable software, but focusing on built-in tools and safe optimization methods available to every owner.
Analysis of the current state of the system and cleaning of memory
Before you make changes to system settings, you need to free up the basic resources that are occupied by junk files. The built-in memory mechanism in the MIUI shell often leaves tails from remote applications and temporary browser files. A crowded drive is the first reason why the processor starts to work slower, since the system does not have enough space for temporary data buffers.
Particular attention should be paid to the Download folder and the cache of messengers such as Telegram or WhatsApp, which tend to accumulate gigabytes of media files that are not formally necessary for the system to work, but physically take up space on the disk. 15-20% The total amount of internal memory can give a significant increase in the speed of writing and reading data.
Use the standard Security app to clean effectively, but don’t rely on the automatic function alone. Manual checks let you remove the really superfluous one, and remove or freeze preinstalled apps you don’t use (called bloatware).
- 🧹 Open the Security app and start Cleaning, then go to Deep Cleaning to analyze large files.
- 📱 Go to Settings. → Annexes → All applications and find heavy programs that take up a lot of cache space.
- 🗑️ Remove unused Google games and services you don’t use through the App Management Menu.
⚠️ Attention: When you clean these apps (clean button in the app's info menu), you reset their settings and log out of your accounts.
Accelerating the interface through the developer settings
The most effective way to visually speed up a smartphone is to reduce or completely disable transition animations. The MIUI shell is famous for its beautiful but heavy effects that load the PowerVR GE8320 graphics accelerator installed in Redmi 9. Changing the scale of animation makes the system’s response instantaneous.
To access these settings, you need to activate the hidden menu. Find Settings → About the phone, click on the MIUI version 7-10 times in a row. Once the notification “You became a developer” appears, you can move to the fine-tuning.
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Remember or write down the initial scale of the animation before changing, so that if you want, you can return everything as it was.
In the developer menu, find the section related to rendering. We're interested in three things: "Scope of window animation," "Scope of transition animation," and "Duration scale of animator." The standard value is 1x. Change it to 0.5x for smoothness and speed balance, or to "No animation" if you want maximum responsiveness.
☑️ Set up animations
These changes don’t affect the actual performance of the CPU in games, but they do create a sense of flying interface when navigating menus and running programs, especially for budget devices, where every millisecond of response matters.
Optimization of RAM (RAM)
The Redmi 9 model often comes with 3 or 4 gigabytes of RAM, which is a minimum requirement for modern standards.The Android system aims to keep as many apps in the background as possible for quick switching, but on devices with low RAM volume, this leads to constant tab reboots and background processes.
There's a "Background Process Limit" option on the developer menu, which is not limited by default, and by setting a 2 or 3 process limit, you force the system to more actively unload from memory what you're not using right now, freeing up resources for an active application.
| Setting up | Standard value | Recommended for Redmi 9 | The effect |
|---|---|---|---|
| Scale of animation | 1x | 0.5x | Visual acceleration |
| Background processes | No restrictions. | No more than 3 | More RAM for the game |
| Hardware acceleration | Included. | Included. | Stability of the GPU |
It's also worth checking out the memory extension feature, if it's available in your firmware version. It uses a portion of the internal storage as virtual RAM. However, given that the built-in drive speed in public-sector employees is lower than the speed of real RAM, enabling this feature can sometimes even slow down the system when you're actively multitasking.
Should I include memory extension?
Energy saving and productivity settings
Xiaomi’s energy-saving systems are aggressive in their quest to extend battery life at any cost, often at the expense of performance, as the processor artificially strangles the frequency.
Go to Settings → Battery and select Performance or Balanced mode, but avoid Saving Energy during active action. In High Performance mode, the system allows the Helio G80 processor to run at maximum frequencies longer without resetting them at the slightest heat.
⚠️ Warning: High performance mode significantly increases battery consumption and body heat. Use it only when necessary, such as when playing or working with heavy applications.
Special attention should be paid to setting up AutoRun applications. Many programs are written in autoboot and hang in the background, consuming resources. Follow the Settings → Apps → Permissions → AutoRun and leave only messengers and alarms on. The rest is safely turned off.
- 🔋 Switch the Power Savings slider to the No Limits position for gaming apps in the Battery menu».
- 🚫 Turn off advertising in system applications through MIUI Ads to reduce the load on the network module and processor.
- 📉 Reduce the screen refresh rate (if available in your version of the software) to 60 Hz to save resources GPU statically.
Optimization of the game through Game Turbo
For gamers, the key tool is the built-in Game Turbo module, which is not just a launcher, but a set of settings that redistributes system resources in favor of running the game, blocks notifications, clears memory before launch, and can increase the sensitivity of the touchscreen.
In Game Turbo settings (available via swipe while playing), you can activate the enhanced performance mode. There is also a feature called “Accelerate Response”, which changes the touch processing algorithm, making control more responsive in shooters and shooters. MOBA-play-off.
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Game Turbo is a Xiaomi tool that is safer than third-party game boosters, since it has deep access rights to the system without the risk of viruses.
And the graphics settings inside the games themselves are not to be chased by the ultimate graphics quality on Redmi 9. Decreasing rendering resolution and turning off shadows will give you a much bigger boost in FPS (frames per second) than any system tweaks. A stable 40-50 FPS on average settings is better than a jiggy 20-25 on ultra settings.
Cardinal measures: Resetting and updating
If the software methods don't work, there may be some critical errors or file conflicts in the system, and then a full factory reset helps, and it puts the smartphone back out of the box by removing all the accumulated software debris.
Before the procedure, be sure to back up important data to the Mi Cloud or your computer. Reset will delete all photos, contacts and installed apps. Path to function: Settings → About Phone → Reset → Erase all data.
Settings → About Phone → MIUI Version (7 times) → Advanced Settings → ResettingAlso check for system updates. Although newer versions of MIUI are sometimes heavier than older versions, they often include security optimizations and baht fixes that may have caused memory leaks.
Will the flashing help?
⚠️ Warning: Before resetting your settings, make sure that the battery charge is at least 50-60%. Interrupting the discharge process due to discharge may result in the inability to boot the system.