No Boot after installing RDS on Windows Server 2025

Just registered here to confirm "x86-64-v2-aes" instead of "host" is working. Although I didn't use any RD services ... just a plain Win2025 server running Veeam (migrated from vSphere).
Just for reference: My VM got stuck just before login screen. If I got past this, everything felt really slow and I've noticed a huge load of "DPCs" in the task manager.

Now everything's fine as usual.