Copy with d'opus freezes access to other usage on the pc during copy action

When i copy files or folders with D'Opus often i can't do anything during the time of copying. It's anoying when copying large files that takes minutes.
Anybody experience the same and how to avoid this.

Do you see the same when copying with other tools?

no. when i stop D'opus on the pc and only copy with windows explorer there's no issue.

If it's only affecting one/some programs and not others, my guess is it's down to either antivirus or something unusual with the drivers or hardware and certain buffer sizes (or a similar detail that shouldn't matter but could with a bad driver/hardware implementation).

I would try disabling antivirus, and making sure the motherboard/SATA drivers are installed and up to date, to see if either are involved.