Hi there,
The blurring effect is a product of the transparency feature,you can disale it with modifying the registry.
-Press Win + R and type regedit into the Run box to open the Registry editor.
-Navigate to the following branch: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System. -If this key isn't present on your device, then create it manually.
-On the right, create a new 32-bit DWORD value named DisableAcrylicBackgroundOnLogon.
-Set its value data to 1 to disable the blur effect.
You can restart the PC after this and see the change in the PC.
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