Chrome Version       : 59.0.3071.91
OS Version: 9460.60.1
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL after other browsers where you have tested this issue:
     Safari 5:
  Firefox 4.x:
     IE 7/8/9:

What steps will reproduce the problem?
1. Download & Mount a zip of 50 original sized photos
2. Try to drag the whole content out to Downloads

What is the expected result?
The files appear shortly after


What happens instead of that?
The system drags and appears to hang after three photos

Please provide any additional information below. Attach a screenshot if
possible.

UserAgentString: Mozilla/5.0 (X11; CrOS x86_64 9460.60.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.91 Safari/537.36

When dragging the files out in sets of 10, the files a copied very quickly and this is a workaround.