Guide
DostGame
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How to Fix League of Legends Alt+Tab Issues
Test borderless mode, matching resolution and refresh rate, overlays, HDR and official graphics drivers.
DostGame
1 min read
1,649 views
A long black screen or freeze during Alt+Tab often comes from switching between different display modes, resolutions, HDR states or refresh rates. Start by making game and desktop settings consistent.
Display checks
- Test borderless windowed mode, which usually switches faster.
- Match in-game resolution and refresh rate to the Windows desktop.
- With multiple monitors, test one display or a shared refresh rate and HDR setting.
- Update the graphics driver from the manufacturer's official source.
Isolate conflicts
Disable Discord, GPU, recording and FPS overlays one at a time. Stop fullscreen video or capture software in the background. Test changes in a custom game, not ranked. If the issue began after an update, run client repair. See our LoL guides.
Frequently Asked Questions
Fullscreen or borderless for faster Alt+Tab?
Performance varies, but borderless windowed mode usually switches more smoothly.
Why does Alt+Tab show a black screen?
The display may resynchronize when mode, resolution, refresh rate or HDR changes.
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