I saw this on the kitz forum:
Re: ASUS DSL-AC68U (VDSL modem/router)
« Reply #428 on: November 08, 2015, 06:15:40 AM »
Quote from: Geekofbroadband on November 08, 2015, 01:55:32 AM
Does this modem/router only play nice if you have a short line?
As VDSL lines all tend to be short due to the nature of the solution I assume you are talking about ADSL lines.
The main criticism of this device is the number of CRC errors it registers. In the real world I've never found that be an issue which impacted line speed or stability.
In the early days of it's release this device got a bad reputation and despite Asus working hard to fix those problems it's a reputation that has stuck.
I've used this device for over a year, mainly on ADSL and now on VDSL. It does not deserve its reputation.
Unlike many other manufacturers Asus continue to improve and bug fix the firmware, it is a much better device than it was a year ago.
It's not perfect, it still has it's quirks but it also has it's major plus points, WiFi performance being being top of that list. It has a lot of modem options to fine tune/tweak your connection. If you are looking to maximise throughput on a long line they may be useful.
People will tell you that there are better devices out there, yet when you look at those devices you will see as much moaning about their problems as there was about this one.
It's almost impossible to say whether this device will work well with your line. I can only suggest that if you decide to buy one you get it from somewhere that takes returns. Try it out, give it a chance".
Unfortunately the guy is lucky to have a stable connection however what he states is not what the majority of purchasers of this flawed product experience and removed from the reality of how sensitive the modem side is...