Samsung Galaxy Performance Hack: Turn Off the Aggressive App Killer

Make your Samsung Galaxy feel fast again! Disable the aggressive app killer and RAM management for smoother performance and fewer app reloads.

Many Samsung Galaxy users notice their phones feel laggy, apps reload frequently when switching between them, and multitasking is not as smooth as expected even on powerful models with ample RAM. The main reason is Samsung’s aggressive RAM management and background app-killing features in One UI.

Turning off or adjusting this aggressive behavior can make your Galaxy feel noticeably more responsive, with smoother app switching and fewer reloads. This guide provides the complete, best methods that work on recent One UI versions (including One UI 7, 8, and 8.5) as of 2026.Why Samsung Aggressively Kills Background AppsSamsung’s One UI focuses heavily on battery life and system smoothness. Features such as:Device Care auto-optimization
RAM Plus (virtual RAM)
Adaptive Battery
Put unused apps to sleep
Background usage limits
...often close apps quickly after the screen turns off or during inactivity. This is more aggressive than standard Android behavior. As a result, apps restart from scratch, notifications can be delayed, and the phone feels less fluid.Best Fixes: Step-by-Step Guide1. Turn Off RAM Plus (Highly Recommended First Step)
Go to Settings > Device Care > Memory > RAM Plus.
Toggle it Off (or set to the lowest value if available).
Restart your phone.  Why it helps: Virtual RAM uses storage, which is slower than physical RAM and can reduce overall performance on devices with sufficient RAM.2. Exclude Important Apps from Memory Cleaning  Go to Settings > Device Care > Memory.  
Tap Excluded apps (or Apps to exclude from cleaning).  
Tap the + icon and add your frequently used apps (e.g., messaging, email, music, browsers, social media).
These apps will stay in memory longer and won’t be closed during “Clean now” or automatic optimizations.3. Adjust Background Usage Limits  Go to Settings > Battery and Device Care > Battery > Background usage limits.  
Turn Off “Put unused apps to sleep”.  
Review and remove important apps from Sleeping, Deep sleeping, and Unused apps lists.  
Add key apps to Never sleeping apps.
4. Set Apps to Unrestricted Battery Usage
For each important app:  Go to Settings > Apps > [Select App] > Battery.  
Tap App battery usage (or Battery optimization).  
Set it to Unrestricted (or “Don’t optimize”).
Alternatively:  Settings > Apps > (⋮ menu) > Special access > Optimize battery usage.  
Change the dropdown to All apps.  
Toggle off optimization for your important apps.
5. Disable Auto Optimization  Open Device Care.  
Tap the three-dot menu (⋮) > Settings.  
Turn off Auto optimization or Auto optimize daily.
6. Additional Battery Settings  Go to Settings > Battery.  
Turn off Adaptive battery if available.  
Check More battery settings and disable any power-saving features that limit background activity.
Advanced Tweaks Using Developer OptionsEnable Developer Options: Go to Settings > About phone and tap Build number 7 times.  
Go back to Settings > Developer options.
Key changes:  Background process limit: Set to “Standard limit” or experiment with “At most 4 processes” for better responsiveness.  
Reduce animation scales: Set Window animation scale, Transition animation scale, and Animator duration scale to 0.5x or Off for a snappier feel.
Extra Performance Tips for Best ResultsUse Device Care > Optimize now manually when needed,but rely on your exclusions for daily use.  
In Recent Apps view, long-press app thumbnails and use the Keep open / padlock option for critical apps.  
Keep your phone updated to the latest One UI version Samsung continues to refine background management.  
Periodically clear cache in Device Care or Recovery mode.  
Set Performance profile to Standard or High in Device Care if available.  
Monitor Battery usage stats regularly to identify any problematic apps.
Expected Results and Important NotesAfter applying these changes:  Smoother multitasking and faster app switching.  
Fewer unexpected app reloads.  
More responsive overall experience.
Possible trade-off: Slight increase in battery usage. Monitor your battery for a few days and fine-tune per-app settings as needed. Results are best on devices with 8GB+ RAM.These steps use only built-in Samsung and Google/Android settings no third-party apps or rooting required. Apply changes one section at a time, test, and restart your phone after major adjustments.Your Galaxy can feel fast, fluid, and reliable again. Share your model and One UI version in the comments if you need more specific advice!This performance hack is one of the most effective and commonly recommended tweaks for Samsung Galaxy users who want stock-like background behavior while keeping all the benefits of One UI.
 Enjoy your smoother phone!