SQL Sever 2025 request with SQL connection

Hello,

I installed SQL Server 2025 on a new VM, and I’m using a C# project to initialize my database based on a model (creating tables, foreign keys, default values, etc.). The process is extremely slow on SQL Server 2025: on my SQL Server 2022 environment, it takes about 30 minutes, but my first test on 2025 ran for over 4 hours.

I’m connecting to SQL using a SQL authentication login (I tried both SA and a newly created account — same issue).

I then tested using a Windows Authentication login, and surprisingly, the performance issue disappeared.

Are there any known issues related to SQL authentication in SQL Server 2025?