First, end high memory usage processes through Task Manager, then disable self-starting programs at boot, then close the Superfetch (SysMain) service, then manually adjust the virtual memory size to 1.5~3 times the physical memory, and finally use the RamMap tool to clean the Mapped File cache to release memory.

If you find that your system is running slowly when using Windows 11 and Task Manager shows that memory usage continues to be high, it may be due to background processes, services, or system settings that are consuming a lot of resources. Here are the specific steps to resolve this issue:

The running environment of this article: Dell XPS 13, Windows 11.

1. End high memory usage processes through Task Manager

Task Manager can visually display the memory usage of each process, helping you quickly identify and terminate abnormal or unnecessary programs.

1. Press the Ctrl Shift Esc key combination to directly open the Task Manager.

2. Click the "Memory" column title, sort by memory usage from high to low, and find the process that takes up the most resources.

3. Select the target process, right-click and select "End Task" to confirm the operation to release memory.

2. Disable self-starting applications at boot

Too many applications running automatically at system startup will significantly increase the initial memory load. Disabling non-essential startup items can effectively reduce memory usage.

1. Switch to the "Startup Applications" tab in Task Manager.

2. View the "startup impact" and current status of each application.

3. Right-click an application that does not need to be started with the system and select "Disable" to prevent it from loading automatically.

3. Close the Superfetch (SysMain) service

The Superfetch service is named SysMain in Windows 10. In some cases, this service can cause an abnormal increase in memory usage. After being disabled, hundreds of megabytes of memory can be released.

1. Press Win R to open the run window, enter services.msc and press Enter.

2. Find the "SysMain" service in the service list and double-click it to open its property settings.

3. Change the "Startup Type" to "Disabled", and then click the "Stop" button to shut down the service immediately.

4. Click "Apply" and confirm to save changes.

4. Adjust virtual memory settings

Virtual memory uses hard disk space to expand available memory capacity. Manually configuring the appropriate virtual memory size can help relieve physical memory pressure.

1. Press Win S to search for "Advanced System Settings" and enter "Settings" in the "Performance" area.

2. Select the "Advanced" tab in the "Performance Options" window and click the "Change" button to modify the virtual memory.

3. Uncheck "Automatically manage paging file size for all drives" and select the disk where the system is located.

4. Select "Custom size", enter 1.5 times the physical memory in "Initial size (MB)", and enter 3 times the physical memory in "Maximum value (MB)".

5. Click "Settings" and confirm, then restart the computer for the changes to take effect.

5. Use RamMap tool to release Mapped File memory

Mapped File is a mechanism used by Windows to cache file data. It may occupy a large amount of memory after running for a long time. You can use professional tools to manually clear this part of the cache.

1. Visit Microsoft’s official Sysinternals page to download the RamMap tool, unzip it and run it.

2. Check the memory usage of "Mapped Files" on the RamMap main interface.

3. Click the "Empty" option in the menu bar and perform cleaning operations such as "Empty Working Sets" and "Empty System Working Set" in sequence.

4. Observe whether the memory usage drops significantly.

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