Make your Windows 11 PC feel faster by throttling heavy background apps with Efficiency mode in Task Manager.

This is for Windows users who get lag when many apps or browser tabs are open.

Time required: 1 minute.

Quick Answer

Press Ctrl + Shift + Esc, sort Task Manager by CPU or Memory, then right-click non-essential high-usage processes and enable Efficiency mode. This gives active apps more breathing room and can improve responsiveness fast.

Prerequisites

  • Windows 11 (22H2 or newer recommended)
  • Access to Task Manager
  • At least one non-essential background process using noticeable CPU/RAM

Step-by-Step: Enable Efficiency Mode

  1. Open Task Manager.
    Press Ctrl + Shift + Esc, then go to Processes.
    Expected result: You can see app/process rows with CPU and Memory usage.
  2. Sort by usage.
    Click the CPU column (or Memory) to show biggest resource users at the top.
    Expected result: Heavy background processes are easy to spot.
  3. Pick a safe background target.
    Choose an app you are not actively using (for example, an idle browser process, updater, or sync app).
    Expected result: Selected process is clearly non-critical to your current task.
  4. Turn on Efficiency mode.
    Right-click the process and click Efficiency mode, then confirm.
    Expected result: A leaf icon appears and process resource pressure usually drops.
  5. Repeat carefully.
    Apply only to other non-essential background processes, then test normal multitasking.
    Expected result: Smoother app switching and fewer stutters, especially on older laptops.

Expected Final Result Check

After enabling Efficiency mode on a few background hogs, foreground work (browser, docs, chat, video calls) should feel more responsive, and laptop battery life may improve slightly during light-to-moderate use.

Common Mistakes

  • Enabling Efficiency mode on the app you are actively using (can slow that app).
  • Applying it blindly to every top process.
  • Expecting big gains when your system is already idle.
  • Not re-testing workflow performance after each change.

Quick Troubleshooting

  • No “Efficiency mode” option: Run Windows Update and reopen Task Manager.
  • App became sluggish: Right-click process and disable Efficiency mode.
  • No noticeable boost: Also reduce startup apps and close unnecessary tabs.
  • Want proof: Watch CPU and Memory trends in Task Manager before/after toggling.

Reference Links

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Next-Step CTA

Try this on one more non-essential background app, then measure how quickly your main work app opens and switches. Keep only the toggles that improve your real workflow.