When you launch the devkit, can you do it from the ArkDevKit.bat file in the directory root?
This will open up a log window separate from the editor so we can see what the editor is doing even when it looks locked up.
See if it’s crashing in the exact same place every time. With any significant devkit updates, often your PC will have to recompile shaders and other intermediates. This might be what it’s doing and just running out of memory if that is the case it might just be a matter of repeating the process until it stops or getting a DDC from someone who has had the time to already rebuild it.