This may not be specifically a DIR-X5460 problem, but I'll ask about it here anyway.
WiFi drops out as often as every 20 minutes to half hour. The SSID stops broadcasting for about a minute or so, then comes back. I have a computer connected directly to the router and it still has internet access when this happens. So it seems to be wireless and not the cable modem or internet service.
I thought it was the X5460 but the same thing happened when I swapped out an old DIR-868L. This has been occurring with firmware versions 1.04 and 1.10.
So far I've tried changing to fixed channels. After changing several times it hasn't helped. I researched and found the following suggestions. Haven't made the changes yet:
-Lower the MTU (Maximum Transmission Unit) from 1500 to 1492 or less (usually found on your router’s main/ basic setup page)
Adjust the following advanced wireless settings:
-Lower the beacon interval from 100 to 50
-Lower the fragmentation threshold from 2346 to 2306
-Lower the RTS threshold from 2347 to 2304
Any possibility that these changes could to make things worse? Having enough fun already.