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Performance & Drivers

Windows 11 Running Slow After Update – Instant Fix

AG
Againly Tech Team
April 16, 2026

Windows 11 Running Slow After Update – Instant Fix

Did your PC turn into a snail after the last "Patch Tuesday"? This is usually due to "Background Indexing" or "Update Cleanup" processes getting stuck in a high-priority loop. Againly fixes this automatically by optimizing your system scheduler and pausing non-critical background maintenance.

Why this happens

  • Index Rebuild: Windows Search is re-cataloging every file on your drive, which spikes disk usage.
  • Corrupt Update Cache: Temporary download files are causing the "Windows Update" service to hang.
  • Driver Mismatch: The update replaced a high-performance manufacturer driver with a generic, slow one.

Fix it manually

  1. Pause Updates: Go to Settings > Windows Update > Pause updates for 1 week to stop the background thrashing.
  2. Disk Cleanup: Search for "Disk Cleanup" > click "Clean up system files" > check "Windows Update Cleanup."
  3. Disable SysMain: Open Services > find "SysMain" > Set to Disabled and stop it.

Fix it automatically with Againly

Againly's "SpeedBoost" identifies stuck system maintenance tasks and safely terminates them, reclaiming 40% of your CPU in seconds.

Instant Resolution

Fix this problem in 46 seconds

Stop wrestling with registry keys and driver settings. Let Againly automate the fix for you right now.

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Works on Windows 10 & 11 • No credit card required

Windows 11 Running Slow After Update – Instant Fix | Againly