Are your DNS nameservers impeding your gaming experience? For me it was packet loss/return errors, That and every other device in my house that connected thru the same dns server to the internet.
This DNS Benchmark will give you visibility into what's going on with your system's currently assigned DNS servers by automatically comparing their performance with many well known publicly available alternatives. It's super easy download here https://www.grc.com/dns/benchmark.htm then open and tab to Nameservers then RunBenchmark, when done tab on Conclusions to see the recommendations. To familiarizing yourself with GRC's DNS Benchmark go to https://www.grc.com/dns/operation.htm