Issue Description

This lock prevents parallel evaluation:

@rainersigwald opening per our discussion.

Steps to Reproduce

Just try to call LoadProject from multiple threads. Only one thread will be progressing.

Expected Behavior

Parallel evaluation should be supported. A workaround here is to create ProjectInstance object directly, and the constructor there is able to do evaluation without any locking.

Actual Behavior

Locking

Analysis

No response

Versions & Configurations

No response