Cloudflare has resolved the issue. Further information: https://twitter.com/eastdakota/status/1284253034596331520

We're stilling observing performance issues, but connectivity has mostly been restored for affected users. Cloudflare stated that impacted points-of-presence included SJC, DFW, SEA, LAX, ORD, IAD, EWR, ATL, LHR, AMS, FRA, and CDG. This aligns with what we detected.

Cloudflare has acknowledged the issue: https://www.cloudflarestatus.com/incidents/b888fyhbygb8

We've detected a partial worldwide Cloudflare outage. Not all regions are affected, but the outage isn't limited to a single region.