WAN traffic slowing LAN traffic (WIFI to LAN or reverse)?

[sammarbella]

I have a N16 router connecting PC, HTPC, NAS HDD, Smart TV via ethernet and 3-5 smartphones/tablets via wifi.

When my slow WAN connection is maxed out (what is not very difficult with my torrent addiction ) i experience problems connecting wifi devices to ethernet devices for LAN traffic.

I.e. when i remote control my Smart TV using an app on smartphone/tablet i suffer constant disconnections IF my slow WAN connection is maxed out.

The same problem occurs when i remote control the PC/HTPC using a VNC client on tablet via WIFI on similar circunstances.

Is this problem related to or could be solved with QoS priority settings on router?

 

[RMerlin]

Check the CPU load and the amount of free memory on your router when that happens. You might be overloading the router, especially with torrents that open a lot of simultaneous connections.

 

[sammarbella]

This could be a reason but not in my case right now.

On bt client running on the HTPC:

Max open connections 500 (global)

Max open connection 100 per torrent

In the router system status graphs:

- cpu usage from 1 to 4%

- Used memory is 40% (constant) 49mb used, 74mb free of 123 total.



Could be the router firewall the culprit?

I use it only to block some ip's related to the LG smart TV spying my preferences and file usage.