Defect #239

Updated by Greg Burri about 7 years ago

On Windows the download rate may rise then suddenly fall. It may be related to the system cache which can be deactivated in the hard drive properties page. 

 * Try to check is some more options can be used when a file is opened or written : 
 ** There is some interesting options here (like FILE_FLAG_NO_BUFFERING): 
 ** Official documentation about file buffering : 
 ** Article about system buffering: 
 * Look if the Qt layer is optimal and can be replaced by ours.