@clop1000 It seems that the problem was because of the faulty driver for Realtek RTL8168/8111 PCI-E Gigabit Ethernet Adapter (PHY: Realtek RTL8111) Instaling a different version of the driver seemed...

@eagle0032 by lan, without wifi (although i have 4 wifi clients but they don't make a lot of load) All default settings.

@clop1000 Only when downloading torrents. I tried downloading several big files through HTTP/FTP (several different Linux distros) at once and everything seems to be working fine, but when...

I have WAN with a 300 Mbit/sec connection. When I am downloading torrents my routers start periodically every 2 minutes to reboot or hang for 10-15 seconds. So it works fine at 30MB/sec downloading...