New Dell Display and Peripheral Manager (Windows) is borked - do not update!
Okay, so I got a notification to remove Dell Display Manager and replace it with the new app.
The new app is completely broken!!! It doesn't see my monitor, there are no settings, I can't do anything with it.
If you get the same notification, DO NOT UPDATE yet. Just don't, it looks like pre-alpha software.
Old DDM available here: https://www.dell.com/support/product-details/en-us/product/dell-display-manager-2.0/drivers