Using Chrome -i'm getting the slow upload in the iphone - not on the chromebox.
what platform are you using for drag/drop?
I just updated chromeos - pic download seems slow.
Google Chrome is up to date
Version 84.0.4147.89 (Official Build) (64-bit)
On my Dell Laptop.
Did not have a problem with the drag and drop last week.
Pic download has been slow for a while, but figured it was larger images.