Nighrhawk 8000p once a month randomly kicks everything out

Greetings,

I have a similar set up...  

Arris Modem

R8000P (running same FW)

Same ISP but Faster Bandwidth 1GB

My R8000P from a wired/wirelss reliability standpoint is 100% stellar.  No disconnects, dropouts, perfomance dips, or latency issues, etc.

I easily have double your number of devices connecting to the router wirelessly and about 7 devices connected wired (I have a switch too).

I've been using Netgear products in my home and other properties for a long, long time.  The hardware is good, but (as I'm sure you already know) the FW is no longer something that can be counted on.  While connectivity is reliable, features (many of which have been broken for years now) do not appear that they will ever get fixed or addressed.  This has unfortunately, forced to me disable or preclude from using a whole host of things which are present, but sadly cause undesired behavior, ranging from performance issues to stuff simply not working period.  So I've just turned features off.  You're not suppose to have to do this.

Things like Traffic Meter and QoS are two things in particular that seem to contribute largely to intermittent / unreliable connectivity.  If you have either of these features enabled, I suggest you turn them off.  Using Auto-Update, or Auto-Check and Update are also known to cause (unexplainable) reliability issues.

Regarding your complaint.  You said you only have 1 wired connection... " but then blinking lights for 1 to 2 ports as if something is working hard"...  How do you have blinking LED's for up to 2 ports with only one wired device connected?

If other LED's on the router are blinking (besides the internet port) or a port where a wired device is actively connected and passing data, this might indicate another issue.  More information or a better description of the actual behavior might help here.

When we read posts about inconsistent or unreliable behavior, we typically suggest that you confirm / verify all of the following:

Do the slowdowns occur with a device connected directly to the cable modem - have you run something connected directly to the modem and confirmed a stable connection for 24 ~ 48 hours?  (Your ISP is not infallable)

Try changing the cables used for connection between your network devices

Any power related issues?

Have you reset the router to defaults and reconfigured all settings from scratch?

Have you tried manually re-flashing the FW (same 1.4.1.68) and reconfiguring? (manually flashing key point here)

When I validate new FW, I flash, and reset, then make incremental changes restarting the device after each change, validating stability and performance before making another change or enabling another feature etc.

We understand your frustration, we absolutely do, but you need to verify each potential point of failure to isolate the problem.

Following the steps above should help guide you through the validation process, give you greater confidence and insight into your network and hopefully identify your issue.