R6700v3 bottlenecking internet speed

plemans thanks, that helps understand why it's behaving that way.  I didn't know it relied on cut through switching to be able to perform at expected speeds.  To be honest I'm somewhat surprised it whacked speeds down to 10% of its rated speed.  I do recall almost two years ago running a PC-to-PC connection through the router and getting a bit over 900 Mb/s.  I hadn't tried that recently but seeing as prior to the reset it was only getting 85 Mb/s, hence 10% of rated speed.

Honestly, that's really good information for someone to know about, that simple things like QoS, traffic monitoring, access control, and parental controls all disable cut through switching, which slows the router down.  Especially considering the fact that I (and others I'm sure) bought this router specifically because it had "advanced" parental controls embedded into the router (ala Circle, which we had previously used the separate device for, but it relied on SSID spoofing).

So unfortunately the router doesn't do what it's advertised to do in the first place now, because not only does parental controls slow the entire router down well below gigabit speeds, but in a separate issue, the parental controls don't even work properly anymore, and haven't for the last 8 months or so.  Entirely unknown whether this has to do with the circle software or something Netgear disabled in the router itself, but before and even after the factory reset it doesn't track user's usage history, meaning the time limits we set for the kids don't do anything anymore.  But... that's another issue altogether.

Regardless, I can't see a good reason why CTF should slow a router down THIS much, but obviously it was somehow.  It would probably be a good idea for Netgear to explain (in the device management interface) that certain functions may slow the router down significantly, and to try disabling them if the router is not performing at expected speeds.

And... well... they should probably find out why CTF doesn't get re-enabled when those functions are turned off, and bug fix it.