D. R. Evans via tde-users wrote:
Whatever the problem was, it has now, following a reboot, disappeared (on all filesystems that I've tried).
It is visible only when you have many files in the Trash directory. Then try adding another 200-300 files and repeat ... The issue is explained in TGW. Seems obvious. I hope someone comes with good idea how to resolve it. Until then ... too many files cause a slow down of copying new files.