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Asus AC-68U capped at 10MBPs down - not sure what is going on

jjhowey

Occasional Visitor
Hello,

It just started to randomly happen yesterday, which shouldn't make sense unless it's dying. I do already have a dead LAN port which might be a hint.

Symptoms include both slow LAN connectivity and WAN Speed Tests show I'm capped around 10MBPs down (upload surprisingly seems to be my normal speeds). Wireless and Wired. Bypass router to WAN shows normal speeds.

  • I've already power cycled, switched between latest 3 versions of firmware, swapped cables, factory reset, nvram clear (mtd-erase2 nvram) and redid the Wizard, etc.
  • I also saw something suggesting it could be NAT Acceleration, but I've tried with Auto and Disabled with 30 second power cycling inbetween to no avail.
  • During speedtest RAM and CPU appear fine.
  • Built-in Network Analyzer shows no other traffic.

Any other ideas what it could be?

Thanks!
 
Last edited:
Your many tests point to hardware failure, but have you checked what encryption you’re using? I remember when my ISP reset my modem awhile ago (before I got my own modem sand router). They set the wrong encryption and it slowed down my connection. Once I set it to WPA2-Personal AES and my speeds came back.

Probably not your issue, but something to check.
 
Your many tests point to hardware failure, but have you checked what encryption you’re using? I remember when my ISP reset my modem awhile ago (before I got my own modem sand router). They set the wrong encryption and it slowed down my connection. Once I set it to WPA2-Personal AES and my speeds came back.

Probably not your issue, but something to check.

Yeah WPA2 has nothing to do with a Wired Connection to my modem, but thanks for chipping in .. triggered some other ideas (which lead nowhere).
 
Yeah WPA2 has nothing to do with a Wired Connection to my modem, but thanks for chipping in .. triggered some other ideas (which lead nowhere).
Sorry about that. Hope you find the issue. Good luck.
 
Final update: RIP Router.

Modem <-> Old DLink <-> AC-68U <-> Desktop (Wired).
Still getting same down speeds.
That eliminates anything weird between Asus and the modem that ISP may have provisioned.
 

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