CRAZYLEGS

We're looking into currently - it's not as simple as CoD to filter, seems they're using proxies/relays so may take longer to get working.

You already have access: https://forum.netduma.com/forum/151-netduma-r3-early-access/

I've since setup my R3 the last couple of days and wasn't too pleased till Fraser sent me 4.0.23 firmware where I felt it was a much better experience moving forward. 
Today I actually started gaming properly on the Netduma R3 and I have to say I'm very happy I got the router. I'm on 1Gbps UP/DOWN Fibre Internet so it's plenty fast for my household. There are already 10Gbps fibre available here in Singapore but it's an overkill for my use. 
I'll briefly summarise some of the issues I had if any of these could help you guys 
1. For PC, if MW3 doesn't show as OPEN for NAT, what I'd recommend you to do is reset your windows network settings and factory reset your router after doing so. Once I did it, 90% of the time under UPNP in dumaos will show as demonware port mapping with 3074 port open. And once you close the game, it goes off. Initially it didn't work at all for me and I just tried resetting my windows network settings and it worked properly after. The other 10% where MW3 will show it as moderate, I'd have to reboot my PC and it will show as open again. I guess with future firmware this could be improved. 
2. Ping stabilising doesn't seem to work reliably for some servers I've played on. By and large it works well, but I think netduma really have to improve it further. I find this usually happens on ping >100ms where the server connection is very volatile. 
3. SmartQOS works fine and prioritises everything so far for my case use. Call of Duty packets are nicely tagged even whatever you're doing in your handphone you can see exactly on dumaos what's going on. Both scary and entertaining. 
4. RGB is a nice touch but please have an option where you can set it off as well but light up during gaming option as well. The god damn white LEDS should also have an option to switch them off. They are much too bright. You guys fitted a high beam in the router or what. 
5. WPS is totally borked even on 4.0.23. The button doesn't work and I can't connect my printer to it as of today. Neither is there a GUI to add it from dumaos unlike XR500 which had it. Please fix this. 
I don't really use much of the other stuff and I'm pretty damn happy I've got the Netduma R3. It's not perfect but I know @Netduma Fraserand team will improve the R3 with future firmwares which wilk significantly improve everyone's experience.
Afterall, the main reason of why I got the R3 was this community and the dedication of Fraser and his team to ensure everyone is taken care off and assisted at any time. 
I've recorded this gameplay on Japan server which plays around 80-90ms of ping. The hitreg is very predictable and crisp. However going to 15ms-48ms servers is definitely snappier and bullets seems to register noticeably faster. Since I'm not hosting the games with my friends from HK, Japan servers come in rotation from time to time and I just play it and I think it's definitely much more playable now with the R3. On my XR500, bullet hitreg seemed very spongy to me unless I was on 2ms-50ms servers but even then it wasn't consistent. I've played last 2 days intensively on the R3 and things seems way more consistent so far in the various pings from different servers I've played on. 
 

There is the Motorola MB 7420 which is 16x4. Might see if your ISP supports it.
The 6183 works as well as a 16x4 modem.