It is crashing the finder whenever iCloud folders are selected in the sidebar.
I am unable to open any of the iCloud Drive folders at all.
Won't actually show the desktop including any drives (internal or otherwise).
Any iCloud enabled apps are having issues as well (Numbers won't launch if I click on the app, though if I open a document from the finder, it will open).
The finder does appear eventually, but only non-iCloud Drive folders are accessible.
I'm able to click on the iCloud activity icon (turns into an "i" and the Uploading x items dialogue pops up).
The dialogue shows a rapidly increasing number of items (355,000 at last count) and below that "86.25 GB of 602GB" and both numbers appear to be increasing.
In Activity Monitor there doesn't appear to be any significant network activity up or down.
For kicks I calculated the "upload" speed and it clocked in at 10GB per minute which is not possible even with my fiber connection. My upload speeds via Speed Test are around 20Mb/Sec (download is 200).
so something this dialogue is not accurate or is perhaps counting files without uploading any.
I've tried to disable iCloud Drive in preferences. It tells me that there is an update in progress and asks if I want to end the update (I select "yes"). It never disables iCloud Drive.
I've deselected the Desktop+Documents option in iCloud Drive preferences and it re-selects itself after a little while.
restarted numerous times including into Safe Mode (which yielded a glitchy video screen that was basically unusable).
I've run disk utility on drives (in Recovery mode).
I've tried to move/delete the offending file in the Finder (which is likely what started all this in the first place).
After trying everything else, I went to the web version of iCloud, and the file was visible in the desktop folder. I have attempted to delete it. It ended up in the "recently Deleted" folder but was unable to open, recover it or delete it further (its dimmed out).