Netduma Fraser

ALL devices should be connected to the R3 for Congestion Control/SmartBOOST to work effectively. If you are able to get a lower ping then the only way would be to do this first as Heatmap is indicating you can't get a ping lower than that at the moment. Does it not show you the ping in game?

Okay let us know how you get on!

I'd always suggest being on the latest, either the last DumaOS 3 firmware or the DumaOS 4 Early Access version

Do you have any devices still connected to your TP link? Set the speeds to 1000/1000. What does Ping Heatmap indicate your best ping to the game would be? What ping did you get previously when using the TP link?

You would just need to do it on the R3 as you've done the passthrough so all traffic is going to the R3 unimpeded by the modem

Are ALL devices connected to the R3? What are the speeds you pay for/receive? Have you entered those speeds into the router? Is Congestion Control set to Always or Auto? How have you setup SmartBOOST? What platform are you playing on and how is it connected, via ethernet or WiFi? Are you actually getting the German server when you get that ping? What country do you live in?

Added https://forum.netduma.com/forum/144-netduma-r2-early-access/

I wouldn't put so much value on the bufferbloat test and getting those values - bufferbloat only occurs when the network is saturated which can't happen when Congestion Control has been lowered. That being said, I assume you were trying in multiples of 10 from 100? Go in multiples of 10 from 95% instead and you may get better results with higher values.

Do you still have the XR1000 to try with on this updated version of GTA to see if you get the same issue?

Added

Is it dropping out when you change the WiFi details? If so you'll need to reconnect to the WiFi using the new details and then you can continue. If not, try setting up via the Nighthawk mobile app instead

Good advice above. Also you mentioned you used the XR and you didn't have the disconnect problems, did you still have all the other odd issues with the XR or was literally everything working as expected?

It's very unlikely to be honest - you said you tried it with QoS off before, did you disable this from the SmartBOOST menu? It should have rendered the SmartBOOST and Congestion Control sections inoperable. If not please try it doing that as it's the proper way to disable it. You can also disable DPI & BI in Settings > Troubleshooting > Advanced

Could you provide a screenshot of the Geo-Filter with what you see when it happens please along with the ID of the server in NA

It's essential the Geo-Filter is enabled before the game client i.e. Steam etc or the game have been launched. If you change Geo-Filter settings when you're on the game then you will need to restart the game for those changes to take effect, otherwise it will use the previous Geo-Filter settings and appear not to be working. You'll need Ping Assist off as well. If it continues please get the ID for one of these NA servers and we can have a look