Is Windows ASLR session-based?

Question

I've heard that Windows ASLR is session-based: A DLL would be relocated only once in each session, subsequent linking to the same dll in the same session would reuse this cached relocation.

So I tried:

1. Write a small program to print the address of a DLL
2. Connect to the computer with RDP twice, each creates its' own session (confirmed by query session)
3. Call the program within different RDP sessions

What I expect:

• Different addresses observed, since I'm in different sessions.

What actually happens:

• The addresses are the same.

Why?