[keep320909]

Dolphin isa a bit useless for serious operations. It uses KIO for file operations (copy, move...), that invokes separate API call for every file, and is very slow and unreliable for large number of files.

Other file managers (Thunar in XFCE) do not have this problem.

[usrbinbash]

GUI file managers are usually used for things where speed is a non-issue. For anything else, Right-Click "Open Terminal Here".