We are on Sitecore 9.2 using Azure Ad integration and hosted on Azure PaaS. . Eventually we started experiencing extreme slowness post login.
Sitecore Loads Slow after Login
Azure AD Login goes infinite loop when accessing Sitecore Admin Pages
Recently while working on Sitecore 9.2 on Azure PaaS, we implemented Azure AD Login using Sitecore Identity Service.
Sitecore Competencies 