First results: https://blog.mozilla.org/futurereleases/2019/04/02/dns-over-... "The results were strong! Like our previous studies, DoH had minimal impact or clearly improved the total time it takes to get a response from the resolver and fetch a web page."
Test announcement: https://blog.mozilla.org/futurereleases/2018/11/27/next-step... "To do that, we’re working with Akamai to help us understand more about the performance impact."
First results: https://blog.mozilla.org/futurereleases/2019/04/02/dns-over-... "The results were strong! Like our previous studies, DoH had minimal impact or clearly improved the total time it takes to get a response from the resolver and fetch a web page."
Final post: https://blog.mozilla.org/futurereleases/2019/07/31/dns-over-... "Furthermore, we found that web pages that are hosted by Akamai–a content distribution network, or “CDN”–have similar performance when DoH is enabled."