Your future is bright.
I am on Windows 10 Insider's Build 15031, and I can say that Edge is amazingly fast. Edge has improved since builds 14***. It seems some optimization has taken place at how it establishes Extensions. In previous builds, even without using any Extensions, Edge seemed to be polling for them.
However, Malwarebytes and Edge, and Malwarebytes and Office 365 still have not learned to play well together. I have disabled a few of the real-time protections offered by Malwarebytes, and am running smoothly. You might try the same, if this sounds familiar.