✦ PC Optimization
Speed up Windows 11 — Safe tweaks that actually work
Most 'speed up Windows 11' lists ship with registry tweaks that break Windows Update inside a year. This is the conservative list — every change is measurable, reversible, and won't brick anything.
- Time
- 20 min
- Difficulty
- easy
- Applies to
- Windows 11, Windows 10
- Updated
- May 25, 2026
Symptoms
- ▸Windows 11 feels slower than the same hardware did on Windows 10
- ▸Start menu has a 1-second lag
- ▸File Explorer hesitates after each click
Likely causes
- ▸Default visual effects and animations
- ▸Heavy default startup apps (Teams, OneDrive, Spotify)
- ▸Aggressive Defender real-time scanning of dev folders
- ▸Power plan set to Balanced
How to fix it — step by step
- 01
Cull startup apps
Task Manager → Startup apps. Disable anything 'High' impact you don't actively use. - 02
Reduce visual effects
System → Advanced system settings → Performance → Adjust for best performance. Re-enable only Smooth edges and Show window contents while dragging. - 03
Switch to Ultimate Performance power plan
powercfg -duplicatescheme e9a42b02-d5df-448d-aa00-03f14749eb61 - 04
Add dev / Steam / VM folders to Defender exclusions
Windows Security → Virus & threat protection → Manage settings → Exclusions. - 05
Disable transparency effects
Settings → Personalization → Colors → Transparency effects → Off. Frees a small but measurable amount of GPU. - 06
Clean temp files
Run
cleanmgr→ Clean up system files → tick everything except the current Windows install.