Hopefully @TSuNaMi will advise also, but thought I would add my views on CRC also.
The ASUS DSL-AC51 etc. use a DSL chipset (MediaTeK) that are not ideal on Long on noisy DSL lines, so these types of Modems / routers are more likely to suffer from CRC’s etc.
Secondly, one CRC per minute even no not idea, but not really that bad unless this effects the internet service you are using (VPN – Gaming etc.) very likely you will not notice this CRC issue 
Broadcom based DSL modems offer better DSL stability, less stability, so maybe an option of your current ASUS modem is causing you to worry ?
In a completely sane world, madness is the only freedom (J.G.Ballard).
You need to login in order to vote