RAX120 V2 Constant Random Reboots

The router reboots  frequently sometimes every 30 minutes. I have noticed that the router reboots under heavy system load of +50% on the processor.  The only way I have been able to drastically lessen the issue is by turning off 2.4 Ghz WMM  services.  Unfortunately my 2.4 Ghz devices pay the price for that with slower  throughput. I can't even view some security camera streams any longer because the bandwidth is so poor.

I first purchased this router about a month ago and have already had the unit replaced by NG once but unfortunately the replacement does the same thing.   I am within the time period to return the router.  I'm hesitant to purchase the RAX200 because of the same issue.  I may have to try another brand after 10 years of using NG.  It doesn't look like Netgear has a solution for this either- I've spent plenty of time troubleshooting with the Level 2 support folks (they spent a lot of insinuating that the power outlet was the culprit, even after trying the router on several outlets and APC backups)).