Ory is the largest open source community in the world for cloud software application security. We maintain advanced open source security software solving authentication, authorization, access control, application network security, and delegation. Ory implements a variety of industry and best-practice standards including OAuth 2.0 / OAuth 2.1, OpenID Connect, Zero Trust Networking, Google Zanzibar Policy Framework, FIDO2 U2F, WebAuthn, TOTP, and more.

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It uses around 2% of cpu while requesting complete login.

Looking at pprof chart I would say that this isn't caused by argon. It surely is taking a lot of time but from a 30s record period it lasts for about 1.9 seconds.