How to enable game acceleration on Xiaomi Redmi 9C: the complete guide

Xiaomi Redmi 9C with a MediaTek Helio G35 processor and 2/3 GB of RAM is not a flagship, but that doesn’t mean it can’t be played comfortably. The manufacturer has provided special features to optimize gameplay that many users don’t even suspect. Enabling the game acceleration mode can increase FPS by 15-30%, reduce delays and make gameplay smoother — especially in popular games such as PUBG Mobile, Free Fire or Call of Duty: Mobile.

The problem is that these settings are often hidden in the depths of MIUI or require additional manipulation. In this article, we will explore all the available ways to activate acceleration, from standard functions to hidden developer parameters. You will learn how to get the Redmi 9C to squeeze the maximum out of its hardware without risking overheating or loss of stability.

What is “game acceleration” and how does it work on the Redmi 9C?

Acceleration mode is a set of optimizations that MIUI applies to running real-time games.

• 🔹 Prioritize CPU resources – the game gets more cores CPU and a high clock speed.
• 🔹 Optimization GPU — The PowerVR GE8320 GPU is running in enhanced mode with minimal delay.
• 🔹 Background process blocking – Unnecessary services are suspended, freeing up RAM.
• 🔹 Adaptive brightness – the screen adjusts to play scenes for better visibility.

On Redmi 9C, this mode is activated through the built-in Game Turbo app (which may be called Game Mode in newer versions of MIUI), but by default it doesn't work at full capacity. To unlock its full potential, you'll have to dig through the settings -- and that's where most users have to struggle.

It's important to understand that acceleration won't turn a budget smartphone into a gaming monster, but it can make the difference between 20 FPS with jerks and 30-35 FPS with a smooth picture, which is already critical for a comfortable game, especially if you prefer shooters or MOBA, where every fraction of a second counts.

Method 1: Enable Game Turbo through standard settings

The easiest and safest method is to use the built-in MIUI tools.

1. Open the Settings. → Special facilities.
2. Scroll down and find the Game Mode section (or Game Turbo in English firmware).
3. Activate the slider Enable the game mode.
4. Return to the main settings menu and go to Apps → Permissions → Auto Run.
5. Find your game (like PUBG Mobile) and enable auto-run for it.

Then, when you start the game, a floating panel with an icon 🎮 will appear at the top of the screen. Click on it to open the Game Turbo menu where you can:

• 🔸 Turn off notifications during play.
• 🔸 Lock the touch buttons (so as not to accidentally come out).
• 🔸 Enable Performance (maximum performance) mode.
• 🔸 Activate 4D- vibration (if supported by the game).

But there's a caveat: some versions of MIUI for Redmi 9C may have hidden the Game Mode option, and if you didn't find it in Special Options, try an alternative way:

1. Open Settings → Battery and Performance.
2. Go to Battery Settings → Select Performance Mode.
3. Choose High Performance (this will enable acceleration for all applications, including games).

⚠️ Warning: High performance mode increases battery consumption and can overheat in long sessions. Use it only while playing and return to balanced mode after.

Method 2: Hidden developer settings for maximum FPS

If the standard Game Turbo isn't enough, you can use hidden MIUI options that Xiaomi doesn't advertise.

1. Activate Developer Mode: Go to Settings → About Phone. Click 7 times in a row on the MIUI Version (you will be notified "You are a developer").
2. Back to Settings → Additionally. → For developers.
3. Find and enable the following options: Forced GPU- acceleration (improves graphics rendering). Disable HW-overley (can reduce lags but increases the load on CPU). Do not save operations (remove background processes after closing applications). Limit background processes → select No background processes.

Critical: The option to "Disable HW-overley" can cause artifacts in some games (e.g., texture flickering in Genshin Impact). If you notice bugs, immediately return it to its original state.

For even greater effect, you can manually limit background processes for specific applications:

1. In the Developer Settings, find Do Not Save Operations and turn it on.
2. Then go to Settings → Applications → Application Management.
3. Select an unnecessary app (such as Facebook or TikTok) → Battery → Limit background activity.

💡

Before changing your developer settings, back up your data through Settings → System → Backup. This will help restore your functionality if something goes wrong.

Method 3: Optimization with MIUI Optimization (Hidden Function)

Xiaomi has built into the MIUI a hidden MIUI Optimization module that can be activated via the ADB- command, which gives access to additional acceleration options not available in the standard interface.

1. Install ADB and Fastboot Tools on PC.
2. Turn on the phone debugging over USB (Settings → For developers).
3. Connect the Redmi 9C to your computer and type in the command line: adb shell settings put global miui_optimization 1
4. Reboot the phone.

After that, new options will appear in the Developer Settings:

• 🔹 MIUI Optimization -- turn it on.
• 🔹 Force GPU Rendering (forced rendering via GPU).
• 🔹 Disable HW Overlays (an alternative way to disable overlays).
• 🔹 Aggressive Data Saving (reduces network latency in online gaming)

These settings give a performance boost of 5-20%, but require caution, for example, Aggressive Data Saving may conflict with some MMORPGs (e.g. Black Desert Mobile) where connection stability is important.

⚠️ Warning: If after activation of MIUI Optimization the phone starts to brake in the menu or warm up without load, return the setting to its original state by command: adb shell settings put global miui_optimization 0

Method 4: Use of third-party utilities (at your own risk)

If the built-in MIUI tools don't work, you can use third-party applications.

• 📌 GFX Tool - allows you to manually configure graphics settings in games (resolution, FPS, shadows). Supports PUBG Mobile, Free Fire, Call of Duty.
• 📌 Game Booster 4x Faster – clears the RAM before starting the game and blocks background processes.
• 📌 L Speed – optimizes the operation of the CPU cores and cache.
• 📌 Kernel Adiutor (requires root) - for fine-tuning the processor frequencies and GPU.

Example of setting up the GFX Tool for PUBG Mobile:

1. Install the app from Google Play.
2. Select PUBG Mobile from the list of games.
3. Set the settings: HD (1280×720) or Smooth (960×540). Graphics style: Smooth or Balanced. Frame per second: Extreme (60 FPS) or High (40 FPS). Shadows: Low. Special effects: Low.

GFX Tool

Warning: Using third-party boosters can lead to bans in some games (for example, PUBG Mobile blocks accounts for changing graphical settings through third-party utilities).

More tips to boost FPS on Redmi 9C

And besides the software settings, the performance is also affected by hardware factors.

• 🔧 Cooling: Use a cooling stand or play in a cool room. At temperatures above 45°C MediaTek Helio G35 starts trottling (automatic frequency reduction).
• 🔄 Updates: Make sure the game and MIUI are updated to the latest version (newer versions often optimize performance).

Another lifehack: if the game supports low graphics settings (like Low Specs Mode in Genshin Impact), always choose them. On Redmi 9C, the difference between Medium and Low settings can give an FPS gain of up to 40% with minimal loss in visual quality.

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On the Redmi 9C, it's critical to monitor the CPU temperature. When you overheat above 50°C, the performance drops by 30-50% due to trottling. Use applications like the CPU Monitor for monitoring.

Frequent problems and their solutions

When you try to enable Redmi 9C game acceleration, users encounter common errors.

If after all the manipulations the game still slows down, check:

• 🔍 Free space: The internal drive must have at least 2-3 GB of free space.
• 🔍 Battery status: If battery capacity has dropped below 80%, the phone may limit performance.
• 🔍 Viruses: Scan through Google Play Protect or Malwarebytes.

FAQ: Answers to popular questions