[Q] DNG / Performance Issue of DNG Drag & Drop

I usually move artifacts from a folder to another folder by selecting target artifacts and drag & drop. When I have only a couple of artifacts, such as 25 or 50 artifacts in content area of DNG, it works fine. No latency with drag & drop. However if I have many artifacts, such as more than 200 or 300 artifacts in content area of DNG, when I try to drag&drop, it takes a lot of time. This might be a architectural issue. Is there any work-around for this?

I know I can escape the situation by browsing only a small set of artifacts at once. But it would be muc better to work with more artifacts in one page. It would definitely saves my time.