The ping you recorded on the router (19-40) where are you seeing that exactly, on the Geo-Filter ping panel, in game ping, a general ping test? Also are you having any issues with games or more worried that you're potentially missing out on lower pings/better games?
We can't do that kind of support as it would simply take too much time - I used to do something like this in the past and it can take hours and that takes away from our ability to help multiple people in a timely manner.
I think it's important to manage expectations, there are no perfect settings that will give you the best gameplay in 100% of the games that you play, there are always outside variables we can't control. Also every single connection is different, what works for one person may not work for another.
Settings in the Settings pages largely will not have any affect on your game quality, the two features to focus on are definitely QoS and the Geo-Filter.
Your bandwidth speeds are very high, this does reduce the need for QoS - lag/congestion occurs when all your bandwidth is being used, as yours is high this is less likely and therefore lag caused by local congestion may not be as much of an issue for you. However, I would recommend you experiment with the Congestion Control percentages using Always and see what feels right for you. The Ping Under Load results we're still improving on so you can take them with a pinch of salt at the moment. Does Traffic Prioritization show it prioritizing when you're playing?
For the Geo-Filter use Ping Heatmap and identify where the lowest ping servers are located and use that to inform your Geo-Filter settings - some people also prefer forcing servers slightly further away so that's something to consider as well.
Ultimately the Optimal Settings Guides Liam linked are our general recommendations based on what we think works for a wide audience but there is a lot of customisation and testing that you can do to really find what works best for your specific connection.