I have a Thecus N4100EVO on a small LAN. The issue I am having is when clients connect to it via WiFi through an AP on the network the throughput is horrible (30 seconds to load a 5Mb picture file) if not a complete failure (windows explorer just locks up). If I connect via Ethernet, everything works perfect. (5Mb pic in less then 1 second, Explorer never locks up)
The local lan has a DSL box that is the DHCP server and the gateway. It also has WiFi, but that is turned off. This connects to a "dumb" cicso 1000Mpbs 8 port switch. The AP connects to the 8 port switch. The AP is a Asus N16-RT, so it has 4 ports on it also. The NAS device is plugged into one of these ports.
Here is what I have tried.
PC connected to Ethernet port on AP , everything works great and fast. Ping times to NAS <1ms.
PC connected to WiFi on AP, poor performance. I have tried a windows XP and Win 7 client, both are the same. Internet browsing is fine, ping times to NAS are 5-10 ms. I am running DD-WRT on the AP and I show less then .1% of packet errors.
There are no other APs showing up on any WiFi scans.
Turned of WiFi on AP, and turned on WiFi with the DSL cable box. Same results as above. Connectivity is there but nothing for performance.
Turned off wifi on DSL device, switched AP with same AP but factory firmware. Results are the same.
Switched AP with a Dlink AP, same problems.
The NAS device has two Ethernet ports on the back. You cannot turn them off, but I have tried both ports as follows and no changes in WiFi performance. the local LAN is 192.168.0/24. You can set LAN1 to auto config, but LAN2 is static only
192.168.0.20 192.168.5.100 Connected to LAN1
192.168.5.100 192.168.0.20 Connected to LAN2
Auto Config (pulled .198) 192.168.5.100 Connected to LAN1
Auto Config (pulled .198) 192.168.0.20 Connected to LAN2
All of the above worked fine with Ethernet, but poorly with wifi.
Any ideas on what to try?