Slow/sporadic WiFi speeds in last few updates

[fry]

Hey guys,

I'm running the latest version 380.67 on my Asus RT-AC87 but have noticed slower WiFi connection speed to my 2x Macbook Pros in the house (usually getting ~200Mb, now getting 100Mb, affecting both 2.4 and 5Ghz). I haven't made any changes to the default settings so I'm a little confused as to why it's happening.

After looking through the changelogs, I can't seem to locate what change might have caused this. Short of flashing it back to Asus's firmware, or reseting to factory defaults, is there any advise/testing I could be doing?

 

[fry]

The net effect is navigating, or copying to/from files my Macbook to my USB3 drive (mounted and shared from the Asus router) are extremely laggy to start, then once they eventually start copying, are running very slowly.

 

[ScottShelby]

I'm running 380.68 on an RT-N66U and having the same problem. It seems to have started when I upgraded using the latest stock BIOS just over a week ago and I just flashed to 380.68 Merlin to see if there was a difference. I'm now considering going back to the previous version of stock. I've tried numerous changes and several computers, but no improvement. Hardwired computers are getting full speed (75+Mbps), but multiple wireless computers are stuck around 25 Mbps.