Better way for accessing photoshop files on qnap

I know Photoshop does not work well with server, but is it the same for accessing psd files on a qnap? I am having an issue where I get a "could not open file because file is locked, you do not have necessary access permissions" when trying to open some file. However if I try to open it with preview it opens fine. I know it is best to duplicate it and work on it on your local drive then put it back but sometimes I forget to put it back. Is there a better way to accessing psd files from the QNAP without getting those weird errors.

I have veriifed I do have correct permisssions.