I just found that QUrl::fromLocalFile() actually calls QFileInfo::exists on the URL which is not something you want to be doing constantly and especially not for remote locations.

• No longer have plasmashell creeping to a halt when copying stuff from my phone (using sshfs mounted by kdeconnect, ie a "local" path but actually remote) to my PC

This code is really just trying to guess whether the descriptions of the job have any sort of path / filename in it, so replace it by a lighter guessing logic.