We have made some performance improvements to the bitemporal generator (for SQL Server) in the Anchor modeler. Code the from the generator has been running in a production environment for a while now without issues, so it should be rather safe to test out. Let us know if you find any issues.
The bitemporal generator is a subset of the concurrent-reliance-temporal generator, aimed at high performance.
Online modeler, test version:
https://www.anchormodeling.com/online-modeler-test-version/