taetae wrote:nothing to do disistallando both the antivirus is putting a 100mb network card
:scratch
if you use a 100mb network card then it isnot possible to achieve downloads speeds higher the 10 Mbyte/s (1 byte= 8 bits)
The speeds you showed in the screen shot before show values up over 40 Mb/s this is abnormal high for a 5big1.
It seems something goes wrong in the communication.
This can be either the windows PC but also the network switch or router. The funny thing is that ftp works well you mentioned. Whta are the speeds you achieve when downloading a big file from the nas to a PC using FTP ?