Registration app slow with registration Nextcloud 12.0.3

After the upgrade from 12.0.2 to 12.0.3 the registration app is very slow. When you fill in the email address then you get the email with the verification link instant but when you click on that and try to register with your inserted information it takes ages. I run nextcloud 12.0.3 on an Ubuntu server. 8 cores cpu and 4gb mem and php7 with apache server. The database is mysql

No slow issues in nextcloud like browsing files and folders.

Has anyone else the same issue?