Microsoft has announced a major update for the Surface Laptop Studio, its replacement for the Surface Book series. While the Surface Laptop Studio debuted in September, it has taken until now for Microsoft to enable a dynamic refresh rate.
https://www.notebookcheck.net/Surface-Laptop-Studio-Microsoft-finally-brings-dynamic-refresh-rate-capabilities-to-its-120-Hz-laptop.622645.0.html
8 months.. typical Microsoft. Disgusting behaviour , this feature should have been done at launch!
This, + the whole anti-reparability thing is why I NEVER recommend Surface products.