Microsoft has been fixing Windows 11's annoying white flash bug in File Explorer for over 2 years

The latest Windows 11 preview build mentions a fix for File Explorer that should stop it from flash banging you in dark mode.

Changing this one Windows setting can make File Explorer run much better

If File Explorer on Windows 11 is running slowly and driving you crazy, this simple change to the settings will smooth out ...

Set up a safe testing lab with Hyper‑V and Windows Sandbox

Stop risking your PC. Use Windows 11's built-in virtualization tools to test virtually anything safely in a fully isolated ...