Thank you for the screenshots, for starters go to Device Manager, click the icon and delete offline devices. You have a ridiculous amount shown and it looks like a lot of them are duplicates and no longer used. Are you using Always or Auto Enable for Congestion Control? Also a screenshot of the full Geo-Filter Map would be helpful alongside Traffic Prioritization.
Based on your Connection Benchmark results your base ping is fairly high and does having spikes which isn't a great place to start, that being said it looks like Ping Under Load can be improved. It's best to start with a high value for Congestion Control, say 95% then do a test, decrease by 10%, test, decrease by 10% etc, until you get to a value that is pretty good and then try 5% either side of that value to see if it can be improved. It's important to note that Download & Upload on Congestion Control don't have to be the same value and that you may have a better experience with differing values.
I used a buffer bloat webpage last night to give me a better score on buffer bloat. When i can I'll eliminate fast search and see where that gets me tonight. Thanks for the help