Is it possible that the timeouts was due to cloudflare blocking some user agent, maybe the browser integrity check/bad browser detection? When the api is used in a web browser, there was no reported issue with latency/timeouts from users and logging. the latency is not much different than without proxying on my end. but when used in an android and ios app with custom user agent I did see occasional large latency and the some users reported random timeouts. Unfortunately I didn't test updating the app to use chrome user agent and simply turned off proxying for that api server (and other api servers that used by non-browser clients). It was happening last year though, I haven't try it again yet.