WALKERBEX.VALORANT articles ↗
WBWALKER BEX
WALKER BEX›VALORANT›GUIDE 62
VALORANT · WINDOWS 11 · ALT TAB

Alt-Tab PC Freezes?

Recover the display first, then isolate graphics overlays and multi-monitor behavior.

Walker Bex Guides••7–9 min read
ON THIS PAGE

The quick answer

VALORANT Freezes PC When Alt-Tabbing on Windows 11

If your display freezes during Alt-Tab, try Win + Ctrl + Shift + B once to request a graphics-driver reset; the screen may flash. If Windows recovers, save your work and test fullscreen versus windowed fullscreen, overlays, HDR and driver updates. Windows GameConfigStore is a separate registry area from Multi-Plane Overlay (MPO); never confuse the two when following .reg guides.

Jump into the guide

01 Fast recovery and the two registry locations

Try firstWin + Ctrl + Shift + B
Game mode registry contextHKCU\System\GameConfigStore
MPO diagnostic keyHKLM\SOFTWARE\Microsoft\Windows\Dwm
Registry paths are distinct. Do not change GameConfigStore to disable MPO. Registry changes affect Windows graphics behavior; keep a restore file.

02 The reversible troubleshooting order

  1. Use Win + Ctrl + Shift + B once. If the PC is truly unresponsive and the display does not recover, do not keep blindly repeating shortcuts.
  2. Update your GPU driver and Windows. Revert any recent overclock, overlay or capture-hook changes.
  3. Switch between fullscreen and windowed fullscreen; disable Discord, NVIDIA/AMD overlay or Xbox capture for one test.
  4. Temporarily test with one monitor, matching refresh rates, and HDR/VRR toggled consistently.
  5. Only if the issue clearly tracks window composition, consider the optional MPO workaround below after creating a restore point. Undo it if there is no improvement.

03 Optional MPO registry experiment and rollback

MPO is a Windows display-composition feature. Some graphics vendors have published MPO-related troubleshooting guidance, but disabling it is not a universal VALORANT fix. The downloadable registry files are offered as an advanced, reversible experiment.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Dwm]
"OverlayTestMode"=dword:00000005
Download optional MPO disable (.reg)Download rollback (.reg)

Files work when extracted with this article ZIP. The standalone HTML also includes the full snippet. Double-clicking a .reg changes Windows; review it and back up first. Restart after any change.

Frequently asked questions

Does Win+Ctrl+Shift+B always fix the freeze?

No. It requests a display driver reset and may recover the screen; it does not solve every system hang.

Is GameConfigStore the MPO path?

No. MPO workarounds commonly use the Dwm registry path under HKLM.

Do I need to disable MPO permanently?

No. Treat it as a reversible diagnostic and restore the default if it does not help.

Sources & update notes

Independent original Walker Bex explanations. References reviewed on October 15, 2026. Figures, device compatibility and vendor UI can change; confirm settings on your own PC.