Microsoft announced another experimental feature that has become available in its Edge browser. It's called Super Duper Secure Mode, and it turns off familiar performance and optimization features to make surfing the Web more secure.
A series of tests that the Edge team conducted have shown that while JIT plays a key role in speeding up browsers, it is not as important to improving Edge's performance, as compared to how important it was in the 2010s. Therefore, users are unlikely to notice any decrease in surfing speed in the new mode.
In the new Super Duper Secure Mode, Microsoft not only disabled JIT, but also enabled other security-related features such as Controlflow-Enforcement Technology and Arbitrary Code Guard, which usually conflict with JIT.
For now, the new mode is experimental, and it is unknown if the feature will ever make it to stable versions of Edge. However, Edge Canary users, developers, and beta users can enable it by visiting:
Microsoft assures that Super Duper Secure Mode should only be enabled on resource-intensive or suspicious resources.