Possible fix* I have tested most of the proposed solutions on this page but have not had much luck. One fix may get the network stable for 10-15 hours, but the issue always seems to come back.
I have had the same issue since Sunday night April 11th. My gut tells me it is a firmware issue but I am not an expert.
I have an RBK50V2, one router RBR50V2 and one satellite RBS50V2. Spectrum internet 400mbps down, 25 up. and things have been working great for roughly 5-6months. Suddenly on the 11th the network started crashing at night. There wasn't full consistency on the timing but it seemed like every night between 11pm-8am the network would grind to a hault. Wired devices could still function on a limp but all wireless connections would grind to a hault. Devices stayed connected, but no traffic.
As mentioned above, I have been on countless forums and attempted multiple fixes to include rolling the firmware back one version at a time in hopes of finding stability. No luck.
Today I happen to notice:
When you go to the Netgear Support page for my model (RBK50v2) it shows you the current firmware for both the router (RBR50v2) and the satellite (RBS50v2). This page says the current firmware version for both devices is 2.7.2.104
However, if I go to the Netgear Support page dedicated to each device individually (there is a page for the router and then another for the satellite) I notice that the satellite has a different current version listed. The individual page for the router shows the same firmware as the joint page (2.7.2.104) but the individual page for the satellite shows the current version as 2.7.1.60
So, I kept the router at 2.7.2.104 but changed the satellite to 2.7.1.60 and the results seem much more stable. We’ll see if it stays that way, fingers crossed.
