Unreal Editor project loading stuck at 39%

Loading a project in Unreal Editor Version: 4.25.1-13594126+++UE4+Release-4.25 on my computer stuck at 39% when RayTracing is enabled for a project. The Shader Compile Working runs forever on 100% CPU. I have a GTX 1050 Ti GPU and GeForce drivers 446.14 installed.

How-I-fixed-it:
Setting the r.SkinCache.CompileShaders=False in the DefaultEngine.ini (project location\config) made the editor start again.

Discussion in the unreal forum:

https://forums.unrealengine.com/community/general-discussion/1710131-unable-to-start-unreal-stuck-at-39

Windows 10 takes very long to load/show contenct of Downloads folder because folder type is pictures

My Windows 10 explorer took ages to load and display the content of the "Downloads" folder. All other folders' content was shown immediately.

How-I-fixed-it:

Find the folder in file explorer
Right click on it and select 'properties' at the bottom of the pop-up window
Click on the customise tab
Change 'optimise this folder for:' to 'General items'

https://answers.microsoft.com/en-us/windows/forum/windows_10-files/very-slow-to-load-downloads-folder-in-windows-10/221944ba-55cd-416a-bd2b-0030d6ee7125

In German / Auf Deutsch:
Windows 10 Explorer braucht sehr lange, um den Inhalt des Download-Ordners anzuzeigen.

Lösung:
Rechtsklick auf den "Downloads"-Ordner -> Eigenschaften
Reiter "Anpassen" -> "Diesen Ordner optimieren für:" ändern von "Bilder" auf "Allgemeine Elemente"