Hello,
Recently we migrated our Domain Controller to 2019. After migration, we've observed that our domain joined servers are running very slow. It takes at least a minute just to open IE page on the server. As part of our troubleshooting, we disjoined one server from domain and performance was back to normal on that server, the moment we joined to domain we faced the same performance issue. I'm not sure if any group policy is causing this issue or it could be something else.
Appreciate your valuable input to fix this issue.