Here you go the answers:
Not working in what sense? Is there an error message?
No error at all, DOPUS just ignore the paste.
How are you initiating the copy? (Drag & drop, Copy & Paste, selecting a folder and clicking Copy Files, etc.)
I try to drag and drop, CTRLC + CRTLV, try the menu copy and paste
Is it only affecting one folder, or one drive, or everything?
all big folders in size, like VMs or backups from local to eternal HDD or network drives
Windows Explorer works ok.
Actual environmento is Windows 10, 32GBram and DOPUS 12